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CVE-2021-3156 (GCVE-0-2021-3156)
Vulnerability from cvelistv5 – Published: 2021-01-26 00:00 – Updated: 2025-10-21 23:35
VLAI
EPSS
CISA KEV
Summary
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
Severity
7.8 (High)
SSVC
Exploitation: active
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-193 - Off-by-one Error
Assigner
References
35 references
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b6557656-10d6-4e76-9711-368565a4bd59
Exploited: Yes
Timestamps
First Seen: 2022-04-06
Asserted: 2022-04-06
Scope
Notes: KEV entry: Sudo Heap-Based Buffer Overflow Vulnerability | Affected: Sudo / Sudo | Description: Sudo contains an off-by-one error that can result in a heap-based buffer overflow, which allows for privilege escalation. | Required action: Apply updates per vendor instructions. | Due date: 2022-04-27 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-3156
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-122 CWE-193 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Sudo |
| Due Date | 2022-04-27 |
| Date Added | 2022-04-06 |
| Vendorproject | Sudo |
| Vulnerabilityname | Sudo Heap-Based Buffer Overflow Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 12:27 UTC
| Updated: 2026-02-06 07:17 UTC
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"descriptions": "[{\"lang\": \"en\", \"value\": \"Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via \\\"sudoedit -s\\\" and a command-line argument that ends with a single backslash character.\"}, {\"lang\": \"es\", \"value\": \"Sudo versiones anteriores a 1.9.5p2 contiene un error de desbordamiento que puede resultar en un desbordamiento de b\\u00fafer basado en la pila, lo que permite la escalada de privilegios a root a trav\\u00e9s de \\\"sudoedit -s\\\" y un argumento de l\\u00ednea de comandos que termina con un solo car\\u00e1cter de barra invertida\"}]",
"id": "CVE-2021-3156",
"lastModified": "2024-11-21T06:21:01.083",
"metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:L/AC:L/Au:N/C:C/I:C/A:C\", \"baseScore\": 7.2, \"accessVector\": \"LOCAL\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 3.9, \"impactScore\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
"published": "2021-01-26T21:15:12.987",
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RHSA-2021:0218
Vulnerability from csaf_redhat - Published: 2021-01-26 22:08 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 8.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
13 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-0:1.8.29-6.el8_3.1.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-0:1.8.29-6.el8_3.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-0:1.8.29-6.el8_3.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-0:1.8.29-6.el8_3.1.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-0:1.8.29-6.el8_3.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debuginfo-0:1.8.29-6.el8_3.1.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debuginfo-0:1.8.29-6.el8_3.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debuginfo-0:1.8.29-6.el8_3.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debuginfo-0:1.8.29-6.el8_3.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debugsource-0:1.8.29-6.el8_3.1.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debugsource-0:1.8.29-6.el8_3.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debugsource-0:1.8.29-6.el8_3.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.3.0.Z.MAIN:sudo-debugsource-0:1.8.29-6.el8_3.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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},
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"title": "Vulnerability summary"
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},
{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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{
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"date": "2021-01-26T22:08:16+00:00",
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RHSA-2021:0219
Vulnerability from csaf_redhat - Published: 2021-01-26 19:53 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 8.2 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
13 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-0:1.8.29-5.el8_2.1.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-0:1.8.29-5.el8_2.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-0:1.8.29-5.el8_2.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-0:1.8.29-5.el8_2.1.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-0:1.8.29-5.el8_2.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debuginfo-0:1.8.29-5.el8_2.1.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debuginfo-0:1.8.29-5.el8_2.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debuginfo-0:1.8.29-5.el8_2.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debuginfo-0:1.8.29-5.el8_2.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debugsource-0:1.8.29-5.el8_2.1.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debugsource-0:1.8.29-5.el8_2.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debugsource-0:1.8.29-5.el8_2.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.2.0.Z.EUS:sudo-debugsource-0:1.8.29-5.el8_2.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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"text": "A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
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"category": "summary",
"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
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"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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RHSA-2021:0220
Vulnerability from csaf_redhat - Published: 2021-01-26 19:36 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 8.1 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
13 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-0:1.8.25p1-8.el8_1.2.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-0:1.8.25p1-8.el8_1.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-0:1.8.25p1-8.el8_1.2.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-0:1.8.25p1-8.el8_1.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-0:1.8.25p1-8.el8_1.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debuginfo-0:1.8.25p1-8.el8_1.2.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debuginfo-0:1.8.25p1-8.el8_1.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debuginfo-0:1.8.25p1-8.el8_1.2.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debuginfo-0:1.8.25p1-8.el8_1.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debugsource-0:1.8.25p1-8.el8_1.2.aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debugsource-0:1.8.25p1-8.el8_1.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debugsource-0:1.8.25p1-8.el8_1.2.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: BaseOS-8.1.0.Z.EUS:sudo-debugsource-0:1.8.25p1-8.el8_1.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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{
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},
"product_reference": "sudo-debugsource-0:1.8.25p1-8.el8_1.2.s390x",
"relates_to_product_reference": "BaseOS-8.1.0.Z.EUS"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "sudo-debugsource-0:1.8.25p1-8.el8_1.2.x86_64 as a component of Red Hat Enterprise Linux BaseOS EUS (v. 8.1)",
"product_id": "BaseOS-8.1.0.Z.EUS:sudo-debugsource-0:1.8.25p1-8.el8_1.2.x86_64"
},
"product_reference": "sudo-debugsource-0:1.8.25p1-8.el8_1.2.x86_64",
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}
]
},
"vulnerabilities": [
{
"cve": "CVE-2021-3156",
"cwe": {
"id": "CWE-122",
"name": "Heap-based Buffer Overflow"
},
"discovery_date": "2021-01-19T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1917684"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
"fixed": [
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2021-3156"
},
{
"category": "external",
"summary": "RHBZ#1917684",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1917684"
},
{
"category": "external",
"summary": "RHSB-2021-002",
"url": "https://access.redhat.com/security/vulnerabilities/RHSB-2021-002"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2021-3156",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3156"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156"
},
{
"category": "external",
"summary": "https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt",
"url": "https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt"
},
{
"category": "external",
"summary": "https://www.sudo.ws/alerts/unescape_overflow.html",
"url": "https://www.sudo.ws/alerts/unescape_overflow.html"
},
{
"category": "external",
"summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
}
],
"release_date": "2021-01-26T18:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-01-26T19:36:08+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:0220"
},
{
"category": "workaround",
"details": "Red Hat Product Security strongly recommends customers to update to fixed sudo packages once they are available. For customers who cannot update immediately, the following interim partial mitigation using systemtap is suggested:\n\n1. Install required systemtap packages and dependencies: \n```\nsystemtap yum-utils kernel-devel-\"$(uname -r)\"\n```\n\nThen for RHEL 7 install kernel debuginfo, using:\n```\ndebuginfo-install -y kernel-\"$(uname -r)\" \n```\nThen for RHEL 8 \u0026 6 install sudo debuginfo, using:\n```\ndebuginfo-install sudo\n```\n \n2. Create the following systemtap script: (call the file as sudoedit-block.stap)\n```\nprobe process(\"/usr/bin/sudo\").function(\"main\") {\n command = cmdline_args(0,0,\"\");\n if (isinstr(command, \"edit\")) {\n raise(9);\n }\n}\n```\n3. Install the script using the following command: (using root)\n```\n# nohup stap -g sudoedit-block.stap \u0026\n```\n(This should output the PID number of the systemtap script)\n\nThis script will cause the vulnerable sudoedit binary to stop working. The sudo command will still work as usual.\nThe above change does not persist across reboots and must be applied after each reboot.\n\nPlease consult How to make a systemtap kernel module load persistently across reboots? (https://access.redhat.com/solutions/5752521) to learn how to\nturn this into a service managed by initd. \n\n4. Once the new fixed packages are installed, the systemtap script can be removed by killing the systemtap process. For example, by using:\n```\n# kill -s SIGTERM 7590\n```\n(where 7590 is the PID of the systemtap process)",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "exploit_status",
"date": "2022-04-06T00:00:00+00:00",
"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
"category": "impact",
"details": "Important"
}
],
"title": "sudo: Heap buffer overflow in argument parsing"
}
]
}
RHSA-2021:0221
Vulnerability from csaf_redhat - Published: 2021-01-27 01:15 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
133 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Client-7.9.Z:sudo-0:1.8.23-10.el7_9.1.ppc64 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-0:1.8.23-10.el7_9.1.ppc64le | — |
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fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-0:1.8.23-10.el7_9.1.s390x | — |
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fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-0:1.8.23-10.el7_9.1.src | — |
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-0:1.8.23-10.el7_9.1.x86_64 | — |
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fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.i686 | — |
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fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.ppc | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.ppc64 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.ppc64le | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.s390 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.s390x | — |
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fix
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|
|
| Unresolved product id: 7Client-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.src | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.x86_64 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.i686 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.s390 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.s390x | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-debuginfo-0:1.8.23-10.el7_9.1.x86_64 | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Client-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.9.Z:sudo-0:1.8.23-10.el7_9.1.s390x | — |
Vendor Fix
fix
Workaround
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Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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"text": "An update for sudo is now available for Red Hat Enterprise Linux 7.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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{
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"text": "The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.\n\nSecurity Fix(es):\n\n* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
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"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
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"text": "1917684"
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"text": "A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
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{
"category": "other",
"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"url": "https://access.redhat.com/security/vulnerabilities/RHSB-2021-002"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2021-3156",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3156"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156"
},
{
"category": "external",
"summary": "https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt",
"url": "https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt"
},
{
"category": "external",
"summary": "https://www.sudo.ws/alerts/unescape_overflow.html",
"url": "https://www.sudo.ws/alerts/unescape_overflow.html"
},
{
"category": "external",
"summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
}
],
"release_date": "2021-01-26T18:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-01-27T01:15:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"url": "https://access.redhat.com/errata/RHSA-2021:0221"
},
{
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"details": "Red Hat Product Security strongly recommends customers to update to fixed sudo packages once they are available. For customers who cannot update immediately, the following interim partial mitigation using systemtap is suggested:\n\n1. Install required systemtap packages and dependencies: \n```\nsystemtap yum-utils kernel-devel-\"$(uname -r)\"\n```\n\nThen for RHEL 7 install kernel debuginfo, using:\n```\ndebuginfo-install -y kernel-\"$(uname -r)\" \n```\nThen for RHEL 8 \u0026 6 install sudo debuginfo, using:\n```\ndebuginfo-install sudo\n```\n \n2. Create the following systemtap script: (call the file as sudoedit-block.stap)\n```\nprobe process(\"/usr/bin/sudo\").function(\"main\") {\n command = cmdline_args(0,0,\"\");\n if (isinstr(command, \"edit\")) {\n raise(9);\n }\n}\n```\n3. Install the script using the following command: (using root)\n```\n# nohup stap -g sudoedit-block.stap \u0026\n```\n(This should output the PID number of the systemtap script)\n\nThis script will cause the vulnerable sudoedit binary to stop working. The sudo command will still work as usual.\nThe above change does not persist across reboots and must be applied after each reboot.\n\nPlease consult How to make a systemtap kernel module load persistently across reboots? (https://access.redhat.com/solutions/5752521) to learn how to\nturn this into a service managed by initd. \n\n4. Once the new fixed packages are installed, the systemtap script can be removed by killing the systemtap process. For example, by using:\n```\n# kill -s SIGTERM 7590\n```\n(where 7590 is the PID of the systemtap process)",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"7Workstation-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.s390",
"7Workstation-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.s390x",
"7Workstation-optional-7.9.Z:sudo-devel-0:1.8.23-10.el7_9.1.x86_64"
]
}
],
"threats": [
{
"category": "exploit_status",
"date": "2022-04-06T00:00:00+00:00",
"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
"category": "impact",
"details": "Important"
}
],
"title": "sudo: Heap buffer overflow in argument parsing"
}
]
}
RHSA-2021:0222
Vulnerability from csaf_redhat - Published: 2021-01-26 20:51 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 7.7 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
76 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
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|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-debuginfo-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.7.EUS:sudo-devel-0:1.8.23-4.el7_7.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
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"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"details": "Red Hat Product Security strongly recommends customers to update to fixed sudo packages once they are available. For customers who cannot update immediately, the following interim partial mitigation using systemtap is suggested:\n\n1. Install required systemtap packages and dependencies: \n```\nsystemtap yum-utils kernel-devel-\"$(uname -r)\"\n```\n\nThen for RHEL 7 install kernel debuginfo, using:\n```\ndebuginfo-install -y kernel-\"$(uname -r)\" \n```\nThen for RHEL 8 \u0026 6 install sudo debuginfo, using:\n```\ndebuginfo-install sudo\n```\n \n2. Create the following systemtap script: (call the file as sudoedit-block.stap)\n```\nprobe process(\"/usr/bin/sudo\").function(\"main\") {\n command = cmdline_args(0,0,\"\");\n if (isinstr(command, \"edit\")) {\n raise(9);\n }\n}\n```\n3. Install the script using the following command: (using root)\n```\n# nohup stap -g sudoedit-block.stap \u0026\n```\n(This should output the PID number of the systemtap script)\n\nThis script will cause the vulnerable sudoedit binary to stop working. The sudo command will still work as usual.\nThe above change does not persist across reboots and must be applied after each reboot.\n\nPlease consult How to make a systemtap kernel module load persistently across reboots? (https://access.redhat.com/solutions/5752521) to learn how to\nturn this into a service managed by initd. \n\n4. Once the new fixed packages are installed, the systemtap script can be removed by killing the systemtap process. For example, by using:\n```\n# kill -s SIGTERM 7590\n```\n(where 7590 is the PID of the systemtap process)",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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],
"threats": [
{
"category": "exploit_status",
"date": "2022-04-06T00:00:00+00:00",
"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
"category": "impact",
"details": "Important"
}
],
"title": "sudo: Heap buffer overflow in argument parsing"
}
]
}
RHSA-2021:0223
Vulnerability from csaf_redhat - Published: 2021-01-27 00:53 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 7.6 Extended Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
114 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-0:1.8.23-3.el7_6.2.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-0:1.8.23-3.el7_6.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-0:1.8.23-3.el7_6.2.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-0:1.8.23-3.el7_6.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-0:1.8.23-3.el7_6.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-debuginfo-0:1.8.23-3.el7_6.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-debuginfo-0:1.8.23-3.el7_6.2.ppc | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-debuginfo-0:1.8.23-3.el7_6.2.ppc64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-debuginfo-0:1.8.23-3.el7_6.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-debuginfo-0:1.8.23-3.el7_6.2.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-debuginfo-0:1.8.23-3.el7_6.2.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-debuginfo-0:1.8.23-3.el7_6.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7ComputeNode-7.6.EUS:sudo-devel-0:1.8.23-3.el7_6.2.i686 | — |
Vendor Fix
fix
Workaround
|
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Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
{
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"text": "Important"
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"distribution": {
"text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
"tlp": {
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"notes": [
{
"category": "summary",
"text": "An update for sudo is now available for Red Hat Enterprise Linux 7.6 Extended Update Support.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
"title": "Topic"
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{
"category": "general",
"text": "The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.\n\nSecurity Fix(es):\n\n* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
"title": "Details"
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"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
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"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1917684"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2021-3156"
},
{
"category": "external",
"summary": "RHBZ#1917684",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=1917684"
},
{
"category": "external",
"summary": "RHSB-2021-002",
"url": "https://access.redhat.com/security/vulnerabilities/RHSB-2021-002"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2021-3156",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3156"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156"
},
{
"category": "external",
"summary": "https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt",
"url": "https://www.qualys.com/2021/01/26/cve-2021-3156/baron-samedit-heap-based-overflow-sudo.txt"
},
{
"category": "external",
"summary": "https://www.sudo.ws/alerts/unescape_overflow.html",
"url": "https://www.sudo.ws/alerts/unescape_overflow.html"
},
{
"category": "external",
"summary": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
}
],
"release_date": "2021-01-26T18:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2021-01-27T00:53:43+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2021:0223"
},
{
"category": "workaround",
"details": "Red Hat Product Security strongly recommends customers to update to fixed sudo packages once they are available. For customers who cannot update immediately, the following interim partial mitigation using systemtap is suggested:\n\n1. Install required systemtap packages and dependencies: \n```\nsystemtap yum-utils kernel-devel-\"$(uname -r)\"\n```\n\nThen for RHEL 7 install kernel debuginfo, using:\n```\ndebuginfo-install -y kernel-\"$(uname -r)\" \n```\nThen for RHEL 8 \u0026 6 install sudo debuginfo, using:\n```\ndebuginfo-install sudo\n```\n \n2. Create the following systemtap script: (call the file as sudoedit-block.stap)\n```\nprobe process(\"/usr/bin/sudo\").function(\"main\") {\n command = cmdline_args(0,0,\"\");\n if (isinstr(command, \"edit\")) {\n raise(9);\n }\n}\n```\n3. Install the script using the following command: (using root)\n```\n# nohup stap -g sudoedit-block.stap \u0026\n```\n(This should output the PID number of the systemtap script)\n\nThis script will cause the vulnerable sudoedit binary to stop working. The sudo command will still work as usual.\nThe above change does not persist across reboots and must be applied after each reboot.\n\nPlease consult How to make a systemtap kernel module load persistently across reboots? (https://access.redhat.com/solutions/5752521) to learn how to\nturn this into a service managed by initd. \n\n4. Once the new fixed packages are installed, the systemtap script can be removed by killing the systemtap process. For example, by using:\n```\n# kill -s SIGTERM 7590\n```\n(where 7590 is the PID of the systemtap process)",
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{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "exploit_status",
"date": "2022-04-06T00:00:00+00:00",
"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
"category": "impact",
"details": "Important"
}
],
"title": "sudo: Heap buffer overflow in argument parsing"
}
]
}
RHSA-2021:0224
Vulnerability from csaf_redhat - Published: 2021-01-26 20:06 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
42 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.4.AUS:sudo-0:1.8.19p2-12.el7_4.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:sudo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:sudo-devel-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.AUS:sudo-devel-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-0:1.8.19p2-12.el7_4.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-0:1.8.19p2-12.el7_4.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-devel-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-devel-0:1.8.19p2-12.el7_4.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.E4S:sudo-devel-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:sudo-0:1.8.19p2-12.el7_4.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:sudo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:sudo-devel-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.4.TUS:sudo-devel-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.AUS:sudo-0:1.8.19p2-12.el7_4.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.AUS:sudo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.AUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.AUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.AUS:sudo-devel-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.AUS:sudo-devel-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-0:1.8.19p2-12.el7_4.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-0:1.8.19p2-12.el7_4.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-devel-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-devel-0:1.8.19p2-12.el7_4.2.ppc64le | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.E4S:sudo-devel-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.TUS:sudo-0:1.8.19p2-12.el7_4.2.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.TUS:sudo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.TUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.TUS:sudo-debuginfo-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.TUS:sudo-devel-0:1.8.19p2-12.el7_4.2.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.4.TUS:sudo-devel-0:1.8.19p2-12.el7_4.2.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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"text": "An update for sudo is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions.\n\nRed Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.",
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"url": "https://access.redhat.com/errata/RHSA-2021:0224"
},
{
"category": "workaround",
"details": "Red Hat Product Security strongly recommends customers to update to fixed sudo packages once they are available. For customers who cannot update immediately, the following interim partial mitigation using systemtap is suggested:\n\n1. Install required systemtap packages and dependencies: \n```\nsystemtap yum-utils kernel-devel-\"$(uname -r)\"\n```\n\nThen for RHEL 7 install kernel debuginfo, using:\n```\ndebuginfo-install -y kernel-\"$(uname -r)\" \n```\nThen for RHEL 8 \u0026 6 install sudo debuginfo, using:\n```\ndebuginfo-install sudo\n```\n \n2. Create the following systemtap script: (call the file as sudoedit-block.stap)\n```\nprobe process(\"/usr/bin/sudo\").function(\"main\") {\n command = cmdline_args(0,0,\"\");\n if (isinstr(command, \"edit\")) {\n raise(9);\n }\n}\n```\n3. Install the script using the following command: (using root)\n```\n# nohup stap -g sudoedit-block.stap \u0026\n```\n(This should output the PID number of the systemtap script)\n\nThis script will cause the vulnerable sudoedit binary to stop working. The sudo command will still work as usual.\nThe above change does not persist across reboots and must be applied after each reboot.\n\nPlease consult How to make a systemtap kernel module load persistently across reboots? (https://access.redhat.com/solutions/5752521) to learn how to\nturn this into a service managed by initd. \n\n4. Once the new fixed packages are installed, the systemtap script can be removed by killing the systemtap process. For example, by using:\n```\n# kill -s SIGTERM 7590\n```\n(where 7590 is the PID of the systemtap process)",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"threats": [
{
"category": "exploit_status",
"date": "2022-04-06T00:00:00+00:00",
"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
"category": "impact",
"details": "Important"
}
],
"title": "sudo: Heap buffer overflow in argument parsing"
}
]
}
RHSA-2021:0225
Vulnerability from csaf_redhat - Published: 2021-01-26 19:47 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
12 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.3.AUS:sudo-0:1.8.6p7-23.el7_3.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:sudo-0:1.8.6p7-23.el7_3.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:sudo-debuginfo-0:1.8.6p7-23.el7_3.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:sudo-debuginfo-0:1.8.6p7-23.el7_3.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:sudo-devel-0:1.8.6p7-23.el7_3.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.3.AUS:sudo-devel-0:1.8.6p7-23.el7_3.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.3.AUS:sudo-0:1.8.6p7-23.el7_3.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.3.AUS:sudo-0:1.8.6p7-23.el7_3.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.3.AUS:sudo-debuginfo-0:1.8.6p7-23.el7_3.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.3.AUS:sudo-debuginfo-0:1.8.6p7-23.el7_3.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.3.AUS:sudo-devel-0:1.8.6p7-23.el7_3.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.3.AUS:sudo-devel-0:1.8.6p7-23.el7_3.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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"name": "Heap-based Buffer Overflow"
},
"discovery_date": "2021-01-19T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "1917684"
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],
"notes": [
{
"category": "description",
"text": "A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
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"category": "vendor_fix",
"date": "2021-01-26T19:47:02+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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}
RHSA-2021:0226
Vulnerability from csaf_redhat - Published: 2021-01-26 19:34 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 7.2 Advanced Update Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
12 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 7Server-7.2.AUS:sudo-0:1.8.6p7-17.el7_2.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:sudo-0:1.8.6p7-17.el7_2.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:sudo-debuginfo-0:1.8.6p7-17.el7_2.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:sudo-debuginfo-0:1.8.6p7-17.el7_2.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:sudo-devel-0:1.8.6p7-17.el7_2.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-7.2.AUS:sudo-devel-0:1.8.6p7-17.el7_2.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.2.AUS:sudo-0:1.8.6p7-17.el7_2.3.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.2.AUS:sudo-0:1.8.6p7-17.el7_2.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.2.AUS:sudo-debuginfo-0:1.8.6p7-17.el7_2.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.2.AUS:sudo-debuginfo-0:1.8.6p7-17.el7_2.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.2.AUS:sudo-devel-0:1.8.6p7-17.el7_2.3.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 7Server-optional-7.2.AUS:sudo-devel-0:1.8.6p7-17.el7_2.3.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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"category": "description",
"text": "A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
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{
"category": "summary",
"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
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"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
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{
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"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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RHSA-2021:0227
Vulnerability from csaf_redhat - Published: 2021-01-26 19:56 - Updated: 2025-11-21 18:19Summary
Red Hat Security Advisory: sudo security update
Severity
Important
Notes
Topic: An update for sudo is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root.
Security Fix(es):
* sudo: Heap buffer overflow in argument parsing (CVE-2021-3156)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
7.8 (High)
Affected products
Fixed
24 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: 6Server-ELS:sudo-0:1.8.6p3-29.el6_10.4.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-0:1.8.6p3-29.el6_10.4.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-0:1.8.6p3-29.el6_10.4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-0:1.8.6p3-29.el6_10.4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-0:1.8.6p3-29.el6_10.4.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-0:1.8.6p3-29.el6_10.4.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-0:1.8.6p3-29.el6_10.4.src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-0:1.8.6p3-29.el6_10.4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-debuginfo-0:1.8.6p3-29.el6_10.4.x86_64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.i686 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.s390 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.s390x | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: 6Server-optional-ELS:sudo-devel-0:1.8.6p3-29.el6_10.4.x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Exploit Status
CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Impact
Important
References
13 references
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"name": "Heap-based Buffer Overflow"
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"discovery_date": "2021-01-19T00:00:00+00:00",
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"text": "1917684"
}
],
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{
"category": "description",
"text": "A flaw was found in sudo. A heap-based buffer overflow was found in the way sudo parses command line arguments. This flaw is exploitable by any local user who can execute the sudo command (by default, any local user can execute sudo) without authentication. Successful exploitation of this flaw could lead to privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "sudo: Heap buffer overflow in argument parsing",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This flaw does not affect the versions of sudo shipped with Red Hat Enterprise Linux 5, because the vulnerable code was not present in these versions.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
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"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"threats": [
{
"category": "exploit_status",
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"details": "CISA: https://www.cisa.gov/known-exploited-vulnerabilities-catalog"
},
{
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"details": "Important"
}
],
"title": "sudo: Heap buffer overflow in argument parsing"
}
]
}
Loading…
Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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