rhsa-2024_0046
Vulnerability from csaf_redhat
Published
2024-01-03 21:13
Modified
2024-11-06 04:37
Summary
Red Hat Security Advisory: squid:4 security update
Notes
Topic
An update for the squid:4 module 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
Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.
Security Fix(es):
* squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)
* squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)
* squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)
* squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286)
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.
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{
"category": "description",
"text": "A flaw was found in Squid. Due to an improper validation of the specified index bug, Squid compiled using `--with-openssl` is vulnerable to a denial of service attack against SSL Certificate validation. This flaw allows a remote server to perform a denial of service against the Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump.",
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},
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"text": "squid: Denial of Service in SSL Certificate validation",
"title": "Vulnerability summary"
},
{
"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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{
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"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"title": "squid: Denial of Service in SSL Certificate validation"
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{
"cve": "CVE-2023-46728",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2023-11-07T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2248521"
}
],
"notes": [
{
"category": "description",
"text": "Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a NULL pointer dereference bug Squid is vulnerable to a Denial of Service attack against Squid\u0027s Gopher gateway. The gopher protocol is always available and enabled in Squid. This issue may lead to a remote denial of service via gopher URL requests.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: NULL pointer dereference in the gopher protocol code",
"title": "Vulnerability summary"
},
{
"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": "self",
"summary": "Canonical URL",
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},
{
"category": "external",
"summary": "RHBZ#2248521",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2248521"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-46728",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-46728"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-46728",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-46728"
},
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},
{
"category": "external",
"summary": "https://megamansec.github.io/Squid-Security-Audit/gopher-nullpointer.html",
"url": "https://megamansec.github.io/Squid-Security-Audit/gopher-nullpointer.html"
}
],
"release_date": "2023-09-26T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2024-01-03T21:13:13+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\n\nAfter installing this update, the squid service will be restarted automatically.",
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"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2024:0046"
},
{
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{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "squid: NULL pointer dereference in the gopher protocol code"
},
{
"cve": "CVE-2023-49285",
"cwe": {
"id": "CWE-126",
"name": "Buffer Over-read"
},
"discovery_date": "2023-12-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2252926"
}
],
"notes": [
{
"category": "description",
"text": "A buffer over-read flaw was found in Squid\u0027s HTTP Message processing feature. This issue may allow attackers to perform remote denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: Buffer over-read in the HTTP Message processing feature",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The only security impact of this vulnerability is a remote denial of service. For this reason, this flaw was rated with an important, and not critical, severity.",
"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-2023-49285"
},
{
"category": "external",
"summary": "RHBZ#2252926",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2252926"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-49285",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-49285"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-49285",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49285"
}
],
"release_date": "2023-12-04T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2024-01-03T21:13:13+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\n\nAfter installing this update, the squid service will be restarted automatically.",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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},
{
"cve": "CVE-2023-49286",
"cwe": {
"id": "CWE-617",
"name": "Reachable Assertion"
},
"discovery_date": "2023-12-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2252923"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in Squid due to an incorrect check of the return value in the helper process management. This issue may allow attackers to perform remote denial of service.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "squid: Incorrect Check of Function Return Value In Helper Process management",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The only security impact of this vulnerability is a remote denial of service. For this reason, this flaw was rated with an important, and not critical, severity.",
"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": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-49286"
},
{
"category": "external",
"summary": "RHBZ#2252923",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2252923"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-49286",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-49286"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-49286",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-49286"
}
],
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{
"category": "vendor_fix",
"date": "2024-01-03T21:13:13+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\n\nAfter installing this update, the squid service will be restarted automatically.",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "squid: Incorrect Check of Function Return Value In Helper Process management"
}
]
}
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- 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.