Denial of Service Vulnerability in libxml2: Out-of-Bounds Read
Summary
DEBIAN-CVE-2011-3905: libxml2, as used in Google Chrome before 16.0.912.63, allows remote attackers to cause a denial of service (out-of-bounds read) via unspecified vectors. Affects libxml2 versions < 2.7.8.dfsg-5.1. Fixed in 2.7.8.dfsg-5.1. How to fix ↓
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Background
libxml2 is a widely used XML parsing library in various applications, including web browsers and server-side software. It provides functionalities for parsing, validating, and manipulating XML documents. The library is known for its performance and compliance with XML standards. However, it has been identified to have a vulnerability that can lead to denial of service, particularly affecting applications that rely on libxml2 for XML processing.
Vulnerability Detail
The vulnerability identified as CVE-2011-3905 allows remote attackers to exploit libxml2, leading to a denial of service through an out-of-bounds read. This issue arises from unspecified vectors that can be manipulated by an attacker, potentially causing applications to crash or behave unpredictably. The vulnerability affects versions of libxml2 used in Google Chrome prior to version 16.0.912.63, indicating a significant risk for users of affected applications.
How To Fix
Minimum fixed version
2.7.8.dfsg-5.1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libxml2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If an immediate update is not feasible, consider implementing input validation to sanitize XML data before processing it with libxml2. This can help mitigate the risk of exploitation until the library is updated.
Conclusion
The vulnerability CVE-2011-3905 in libxml2 poses a significant risk of denial of service through an out-of-bounds read. It is crucial for users and developers to update to the patched version to ensure the security and stability of their applications. Utilizing tools like Vulert can help in monitoring and managing such vulnerabilities effectively.
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FAQ
CVE-2011-3905 is a vulnerability in libxml2 that allows remote attackers to cause a denial of service through an out-of-bounds read.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without requiring any signup.
Failing to address this vulnerability can lead to application crashes and potential exploitation by attackers, compromising the stability and security of your software.
Yes, Vulert provides a service that monitors and alerts for open-source vulnerabilities in your software using just a manifest file like package-lock.json.
If an immediate update is not possible, implement input validation to sanitize XML data processed by libxml2 as a temporary workaround.
References
Related vulnerabilities
Recent vulnerabilities recorded for libxml2.
