Security Update for libxml2
Summary
DLA-1194-1: libxml2 - security update. Affects libxml2 versions < 2.8.0+dfsg1-7+wheezy11. Fixed in 2.8.0+dfsg1-7+wheezy11. How to fix ↓
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Background
libxml2 is a widely used software library for parsing and manipulating XML files. It provides a set of APIs and tools for developers to work with XML data. However, a security vulnerability has been discovered in versions prior to 2.9.5.
Vulnerability Detail
The vulnerability, identified as CVE-2017-16931, arises from a mishandling of parameter-entity references in the parser.c file. Specifically, the NEXTL macro calls the xmlParserHandlePEReference function when encountering a '%' character in a DTD name. This flaw can be exploited to execute arbitrary code or cause a denial of service attack. Another vulnerability, CVE-2017-16932, allows for infinite recursion in parameter entities, leading to resource exhaustion and potential system instability.
How To Fix
Minimum fixed version
2.8.0+dfsg1-7+wheezy11
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
There are no known workarounds for these vulnerabilities. It is crucial to apply the provided security update to ensure the integrity and security of your system.
Conclusion
In conclusion, libxml2 versions prior to 2.9.5 are vulnerable to two security issues. It is crucial to upgrade to the latest version or apply the provided security update to protect your system from potential exploitation. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for libxml2 →
FAQ
libxml2 is a software library for parsing and manipulating XML files. It is widely used in various applications and programming languages.
These vulnerabilities can be exploited by an attacker to execute arbitrary code or cause a denial of service attack. It is important to update libxml2 to mitigate these risks.
You can use the Vulert Playground at Vulert Scanner to check if your application is affected by this vulnerability. Simply upload your manifest file, such as package-lock.json, and it will provide real-time alerts for open-source vulnerabilities.
No, there are no known workarounds for these vulnerabilities. It is essential to apply the provided security update.
You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, at https://wiki.debian.org/LTS.
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