csaf_redhat - rhsa-2021

rhsa-2021_0224

Vulnerability from csaf_redhat

Published

2021-01-26 20:06

Modified

2024-11-15 11:45

Summary

Red Hat Security Advisory: sudo security update

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.

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": "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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          "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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          ],
          "restart_required": {
            "category": "none"
          },
          "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"
    }
  ]
}

cve-2021-3156

Vulnerability from cvelistv5

Published

2021-01-26 00:00

Modified

2024-09-18 16:41

Severity ?

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.

References

▼	URL	Tags
	https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html	mailing-list
	http://seclists.org/fulldisclosure/2021/Jan/79	mailing-list
	http://www.openwall.com/lists/oss-security/2021/01/26/3	mailing-list
	https://security.gentoo.org/glsa/202101-33	vendor-advisory
	https://www.debian.org/security/2021/dsa-4839	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/	vendor-advisory
	http://www.openwall.com/lists/oss-security/2021/01/27/1	mailing-list
	http://www.openwall.com/lists/oss-security/2021/01/27/2	mailing-list
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM	vendor-advisory
	https://www.kb.cert.org/vuls/id/794544	third-party-advisory
	http://seclists.org/fulldisclosure/2021/Feb/42	mailing-list
	http://www.openwall.com/lists/oss-security/2021/02/15/1	mailing-list
	https://www.oracle.com//security-alerts/cpujul2021.html
	https://www.sudo.ws/stable.html#1.9.5p2
	https://www.openwall.com/lists/oss-security/2021/01/26/3
	http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html
	https://security.netapp.com/advisory/ntap-20210128-0002/
	https://security.netapp.com/advisory/ntap-20210128-0001/
	http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html
	http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html
	http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html
	https://support.apple.com/kb/HT212177
	https://kc.mcafee.com/corporate/index?page=content&id=SB10348
	https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability
	https://www.synology.com/security/advisory/Synology_SA_21_02
	http://www.openwall.com/lists/oss-security/2021/09/14/2	mailing-list
	https://www.oracle.com/security-alerts/cpuoct2021.html
	https://www.oracle.com/security-alerts/cpuapr2022.html
	http://www.openwall.com/lists/oss-security/2024/01/30/8	mailing-list
	http://www.openwall.com/lists/oss-security/2024/01/30/6	mailing-list
	http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
	http://seclists.org/fulldisclosure/2024/Feb/3	mailing-list
	https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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            "name": "20210129 Sudo Privilege Escalation Vulnerability Affecting Cisco Products: January 2021",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM"
          },
          {
            "name": "VU#794544",
            "tags": [
              "third-party-advisory",
              "x_transferred"
            ],
            "url": "https://www.kb.cert.org/vuls/id/794544"
          },
          {
            "name": "20210211 APPLE-SA-2021-02-09-1 macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, and macOS Mojave 10.14.6 Security Update 2021-002",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2021/Feb/42"
          },
          {
            "name": "[oss-security] 20210215 Re: sudo: Ineffective NO_ROOT_MAILER and Baron Samedit",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/02/15/1"
          },
          {
            "tags": [
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            ],
            "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.sudo.ws/stable.html#1.9.5p2"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://www.openwall.com/lists/oss-security/2021/01/26/3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210128-0002/"
          },
          {
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            ],
            "url": "https://security.netapp.com/advisory/ntap-20210128-0001/"
          },
          {
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          },
          {
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          },
          {
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            "url": "http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html"
          },
          {
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            ],
            "url": "https://support.apple.com/kb/HT212177"
          },
          {
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            "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10348"
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            "url": "https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability"
          },
          {
            "tags": [
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            "url": "https://www.synology.com/security/advisory/Synology_SA_21_02"
          },
          {
            "name": "[oss-security] 20210914 Re: Oracle Solaris membership in the distros list",
            "tags": [
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            ],
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          },
          {
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            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
          },
          {
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            ],
            "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
          },
          {
            "name": "[oss-security] 20240130 Re: CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/01/30/8"
          },
          {
            "name": "[oss-security] 20240130 CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
            "tags": [
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              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2024/01/30/6"
          },
          {
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            ],
            "url": "http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html"
          },
          {
            "name": "20240204 CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
            "tags": [
              "mailing-list",
              "x_transferred"
            ],
            "url": "http://seclists.org/fulldisclosure/2024/Feb/3"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      ],
      "descriptions": [
        {
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          "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
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          "tags": [
            "mailing-list"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html"
        },
        {
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        },
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          "tags": [
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          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/01/26/3"
        },
        {
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          "tags": [
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          ],
          "url": "https://security.gentoo.org/glsa/202101-33"
        },
        {
          "name": "DSA-4839",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://www.debian.org/security/2021/dsa-4839"
        },
        {
          "name": "FEDORA-2021-2cb63d912a",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/"
        },
        {
          "name": "FEDORA-2021-8840cbdccd",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/"
        },
        {
          "name": "[oss-security] 20210127 Re: Baron Samedit: Heap-based buffer overflow in Sudo (CVE-2021-3156)",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/01/27/1"
        },
        {
          "name": "[oss-security] 20210127 Re: Baron Samedit: Heap-based buffer overflow in Sudo (CVE-2021-3156)",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/01/27/2"
        },
        {
          "name": "20210129 Sudo Privilege Escalation Vulnerability Affecting Cisco Products: January 2021",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM"
        },
        {
          "name": "VU#794544",
          "tags": [
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          ],
          "url": "https://www.kb.cert.org/vuls/id/794544"
        },
        {
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          "tags": [
            "mailing-list"
          ],
          "url": "http://seclists.org/fulldisclosure/2021/Feb/42"
        },
        {
          "name": "[oss-security] 20210215 Re: sudo: Ineffective NO_ROOT_MAILER and Baron Samedit",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/02/15/1"
        },
        {
          "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
        },
        {
          "url": "https://www.sudo.ws/stable.html#1.9.5p2"
        },
        {
          "url": "https://www.openwall.com/lists/oss-security/2021/01/26/3"
        },
        {
          "url": "http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20210128-0002/"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20210128-0001/"
        },
        {
          "url": "http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html"
        },
        {
          "url": "http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html"
        },
        {
          "url": "http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html"
        },
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        },
        {
          "url": "https://www.synology.com/security/advisory/Synology_SA_21_02"
        },
        {
          "name": "[oss-security] 20210914 Re: Oracle Solaris membership in the distros list",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/09/14/2"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "name": "[oss-security] 20240130 Re: CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2024/01/30/8"
        },
        {
          "name": "[oss-security] 20240130 CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
          "tags": [
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          ],
          "url": "http://www.openwall.com/lists/oss-security/2024/01/30/6"
        },
        {
          "url": "http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html"
        },
        {
          "name": "20240204 CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
          "tags": [
            "mailing-list"
          ],
          "url": "http://seclists.org/fulldisclosure/2024/Feb/3"
        },
        {
          "url": "https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-3156",
    "datePublished": "2021-01-26T00:00:00",
    "dateReserved": "2021-01-15T00:00:00",
    "dateUpdated": "2024-09-18T16:41:27.031257",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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