Denial of Service Vulnerability in libxml2 Affecting Google Chrome
Summary
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 that provides a range of functionalities for processing XML documents. It is utilized in various applications, including web browsers like Google Chrome. The library is known for its performance and compliance with XML standards. However, certain versions of libxml2 have been found to be vulnerable to a denial of service attack, which can be exploited by remote attackers.
Vulnerability Detail
CVE-2011-3905 is a vulnerability in libxml2 that allows remote attackers to cause a denial of service through an out-of-bounds read. This vulnerability arises from unspecified vectors that can be exploited when the library processes XML data. The potential ramifications include application crashes and service interruptions, which can significantly impact user experience and system reliability.
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 upgrade is not feasible, consider restricting access to the application using libxml2 from untrusted sources. Implementing input validation and sanitization can also help mitigate the risk of exploitation until the library is updated.
Conclusion
CVE-2011-3905 is a significant vulnerability in the libxml2 library that can lead to denial of service attacks. Users are strongly advised to upgrade to the latest version to ensure their applications remain secure. Additionally, utilizing tools like Vulert can help in monitoring and managing open-source vulnerabilities effectively.
See every vulnerability recorded for libxml2 →
FAQ
CVE-2011-3905 is a vulnerability in the libxml2 library that can lead to a denial of service due to an out-of-bounds read.
The vulnerability affects versions of libxml2 prior to 2.7.8.dfsg-5.1.
You can use Vulert to monitor and alert for open-source vulnerabilities in your software by analyzing your manifest file. Visit Vulert Scanner to check if your application is affected without any signup.
The primary impact is a denial of service, which can cause application crashes and service interruptions.
Yes, you can restrict access to the application from untrusted sources and implement input validation to reduce the risk of exploitation.
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