rhsa-2023_0338
Vulnerability from csaf_redhat
Published
2023-01-23 15:29
Modified
2024-11-06 02:17
Summary
Red Hat Security Advisory: libxml2 security update
Notes
Topic
An update for libxml2 is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Moderate. 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 libxml2 library is a development toolbox providing the implementation of various XML standards.
Security Fix(es):
* libxml2: integer overflows with XML_PARSE_HUGE (CVE-2022-40303)
* libxml2: dict corruption caused by entity reference cycles (CVE-2022-40304)
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.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Moderate" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for libxml2 is now available for Red Hat Enterprise Linux 9.\n\nRed Hat Product Security has rated this update as having a security impact of Moderate. 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" }, { "category": "general", "text": "The libxml2 library is a development toolbox providing the implementation of various XML standards.\n\nSecurity Fix(es):\n\n* libxml2: integer overflows with XML_PARSE_HUGE (CVE-2022-40303)\n\n* libxml2: dict corruption caused by entity reference cycles (CVE-2022-40304)\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" }, { "category": "legal_disclaimer", "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.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2023:0338", "url": "https://access.redhat.com/errata/RHSA-2023:0338" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#moderate", "url": "https://access.redhat.com/security/updates/classification/#moderate" }, { "category": "external", "summary": "2136266", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2136266" }, { "category": "external", "summary": "2136288", 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Parsing a XML document with the XML_PARSE_HUGE option enabled can result in an integer overflow because safety checks were missing in some functions. Also, the xmlParseEntityValue function didn\u0027t have any length limitation.", "title": "Vulnerability description" }, { "category": "summary", "text": "libxml2: integer overflows with XML_PARSE_HUGE", "title": "Vulnerability summary" }, { "category": "other", "text": "This flaw is only triggered when parsing a multi-gigabyte XML document with the XML_PARSE_HUGE option enabled, and the most likely impact of this flaw is a Denial of Service in the application linked to the library. 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When a reference cycle is detected in the XML entity cleanup function the XML entity data can be stored in a dictionary. In this case, the dictionary becomes corrupted resulting in logic errors, including memory errors like double free.", "title": "Vulnerability description" }, { "category": "summary", "text": "libxml2: dict corruption caused by entity reference cycles", "title": "Vulnerability summary" }, { "category": "other", "text": "The most likely impact of this flaw is a Denial of Service in the application linked to the library. To reflect this, Red Hat Product Security has rated this flaw as having a moderate security impact.", "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": [ "AppStream-9.1.0.Z.MAIN:libxml2-0:2.9.13-3.el9_1.aarch64", "AppStream-9.1.0.Z.MAIN:libxml2-0:2.9.13-3.el9_1.i686", "AppStream-9.1.0.Z.MAIN:libxml2-0:2.9.13-3.el9_1.ppc64le", "AppStream-9.1.0.Z.MAIN:libxml2-0:2.9.13-3.el9_1.s390x", "AppStream-9.1.0.Z.MAIN:libxml2-0:2.9.13-3.el9_1.src", "AppStream-9.1.0.Z.MAIN:libxml2-0:2.9.13-3.el9_1.x86_64", "AppStream-9.1.0.Z.MAIN:libxml2-debuginfo-0:2.9.13-3.el9_1.aarch64", "AppStream-9.1.0.Z.MAIN:libxml2-debuginfo-0:2.9.13-3.el9_1.i686", "AppStream-9.1.0.Z.MAIN:libxml2-debuginfo-0:2.9.13-3.el9_1.ppc64le", 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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.