Critical Buffer Over-read Vulnerability in libxml2 Package
Summary
ALSA-2026:26354: Low: libxml2 security update. Affects libxml2 versions < 2.9.7-21.el8_10.5. Fixed in 2.9.7-21.el8_10.5. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
libxml2 is a widely used development toolbox that provides an implementation of various XML standards. It is essential for parsing XML documents and is utilized in numerous applications and libraries. The package includes functionalities for XML parsing, validation, and transformation, making it a critical component in software development. However, vulnerabilities in libxml2 can lead to severe security risks, affecting the integrity and confidentiality of applications relying on it.
Vulnerability Detail
The vulnerability identified as CVE-2024-34459 involves a buffer over-read in the xmlHTMLPrintFileContext function within the xmllint.c file of the libxml2 library. This flaw can potentially allow an attacker to read sensitive data beyond the intended buffer limits, leading to information disclosure. The issue arises from improper handling of input data, which may result in unexpected behavior and could be exploited to compromise the security of applications using the affected library.
How To Fix
Minimum fixed version
2.9.7-21.el8_10.5
This is the first release that contains the fix.
sudo dnf update libxml2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, you can limit the use of the affected functions in your application until the package is updated. However, it is strongly advised to apply the patch as soon as possible to mitigate any potential risks.
Conclusion
The buffer over-read vulnerability in the libxml2 package poses a significant risk to applications relying on this library. It is crucial to update to the patched version to safeguard against potential exploits. Regular monitoring for vulnerabilities using tools like Vulert can help maintain the security of your software.
See every vulnerability recorded for libxml2 →
FAQ
CVE-2024-34459 is a vulnerability in the libxml2 library that allows for a buffer over-read, potentially leading to information disclosure.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
Exploitation of this vulnerability could lead to unauthorized access to sensitive data, compromising the security of applications that utilize the libxml2 library.
Yes, a patch is available in version 2.9.7-21.el8_10.5 of the libxml2 package. It is recommended to update to this version.
libxml2 is used for parsing, validating, and transforming XML documents, making it a critical component in many software applications.
Related vulnerabilities
Recent vulnerabilities recorded for libxml2.
