Red Hat Security Advisory: Red Hat Update Infrastructure 5.2 security update
CVE-2024-34459 is a buffer over-read vulnerability in the xmllint program distributed by the libxml2 package, specifically triggered when processing crafted files with the --htmlout option. This flaw can cause the application to crash, resulting in a denial of service. The issue only affects xmllint when the --htmlout command line option is used, and applications not using or exposing xmllint are not vulnerable. No fix is currently provided in the Red Hat advisory, and the vendor recommends avoiding processing untrusted files with xmllint as a mitigation.
AI Analysis
Technical Summary
A buffer over-read vulnerability (CWE-126) exists in the xmllint program of the libxml2 package, specifically in the xmlHTMLPrintFileContext function. When xmllint processes a crafted file using the --htmlout command line option, it may read beyond the intended memory buffer, causing a crash and denial of service. The issue is local and requires user interaction to trigger. The vulnerability does not affect xmllint if the --htmlout option is not used, and applications not using or exposing xmllint are not vulnerable. Red Hat's advisory highlights the risk of denial of service and notes the absence of a current fix, recommending mitigation by avoiding processing untrusted files with xmllint.
Potential Impact
The vulnerability can cause xmllint to crash, resulting in denial of service when processing crafted files with the --htmlout option. There is no confidentiality or integrity impact reported. The flaw is local and requires user interaction. No known exploits are reported in the wild. The impact is limited to applications that use or expose the vulnerable xmllint program with the --htmlout option.
Mitigation Recommendations
Red Hat advises not to process untrusted files with the xmllint program using the --htmlout option. No official fix or patch is currently available according to the vendor advisory. Users should avoid using the vulnerable functionality on untrusted input to mitigate the risk.
Red Hat Security Advisory: Red Hat Update Infrastructure 5.2 security update
Description
CVE-2024-34459 is a buffer over-read vulnerability in the xmllint program distributed by the libxml2 package, specifically triggered when processing crafted files with the --htmlout option. This flaw can cause the application to crash, resulting in a denial of service. The issue only affects xmllint when the --htmlout command line option is used, and applications not using or exposing xmllint are not vulnerable. No fix is currently provided in the Red Hat advisory, and the vendor recommends avoiding processing untrusted files with xmllint as a mitigation.
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A buffer over-read vulnerability (CWE-126) exists in the xmllint program of the libxml2 package, specifically in the xmlHTMLPrintFileContext function. When xmllint processes a crafted file using the --htmlout command line option, it may read beyond the intended memory buffer, causing a crash and denial of service. The issue is local and requires user interaction to trigger. The vulnerability does not affect xmllint if the --htmlout option is not used, and applications not using or exposing xmllint are not vulnerable. Red Hat's advisory highlights the risk of denial of service and notes the absence of a current fix, recommending mitigation by avoiding processing untrusted files with xmllint.
Potential Impact
The vulnerability can cause xmllint to crash, resulting in denial of service when processing crafted files with the --htmlout option. There is no confidentiality or integrity impact reported. The flaw is local and requires user interaction. No known exploits are reported in the wild. The impact is limited to applications that use or expose the vulnerable xmllint program with the --htmlout option.
Mitigation Recommendations
Red Hat advises not to process untrusted files with the xmllint program using the --htmlout option. No official fix or patch is currently available according to the vendor advisory. Users should avoid using the vulnerable functionality on untrusted input to mitigate the risk.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:27737
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a395a05eed863c81e08e789
Added to database: 06/22/2026, 15:51:33 UTC
Last enriched: 08/06/2026, 20:00:53 UTC
Last updated: 08/07/2026, 00:41:05 UTC
Views: 119
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