Out-of-Bounds Memory Access in libxml2: CVE-2025-32414
Summary
ALPINE-CVE-2025-32414: In libxml2 before 2.13.8 and 2.14.x before 2.14.2, out-of-bounds memory access can occur in the Python API (Python bindings) because of an incorrect return value. Affects libxml2 versions < 2.11.8-r3. Fixed in 2.11.8-r3. How to fix ↓
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Background
libxml2 is a widely used XML parsing library that provides a range of functionalities for reading, writing, and manipulating XML and HTML documents. It is known for its performance and compliance with standards. However, certain versions of libxml2 are vulnerable to an out-of-bounds memory access issue, which can lead to potential security risks.
Vulnerability Detail
The vulnerability identified as CVE-2025-32414 affects libxml2 versions prior to 2.13.8 and 2.14.x before 2.14.2. It arises from an incorrect return value in the Python API, specifically in the xmlPythonFileRead and xmlPythonFileReadRaw functions. This flaw can lead to out-of-bounds memory access, which may allow attackers to exploit the vulnerability, potentially leading to data corruption or unauthorized access to sensitive information.
How To Fix
Minimum fixed version
2.11.8-r3
This is the first release that contains the fix.
sudo apk add --upgrade libxml2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, consider avoiding the use of the Python API functions xmlPythonFileRead and xmlPythonFileReadRaw until the package is updated to a secure version.
Conclusion
CVE-2025-32414 represents a significant security risk for applications using vulnerable versions of libxml2. It is crucial to update to the patched versions to mitigate potential threats. Regular monitoring and vulnerability management practices, such as using tools like Vulert, can help maintain application security.
See every vulnerability recorded for libxml2 →
FAQ
CVE-2025-32414 is a vulnerability in libxml2 that allows for out-of-bounds memory access due to an incorrect return value in its Python API.
Versions of libxml2 prior to 2.13.8 and 2.14.x before 2.14.2 are affected by this vulnerability.
Exploitation of this vulnerability can lead to data corruption, unauthorized access to sensitive information, and potential system instability.
You can use Vulert, which monitors open-source vulnerabilities in your software using a manifest file like package-lock.json. Visit Vulert Scanner to check your application without signup.
The CVSS score for CVE-2025-32414 is 7.5, indicating a high severity level.
References
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