Moderate: libxml2 security update
Summary
ALSA-2023:0338: Moderate: libxml2 security update. Affects libxml2 versions < 2.9.13-3.el9_1. Fixed in 2.9.13-3.el9_1. How to fix ↓
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Background
The libxml2 library is a development toolbox that provides the implementation of various XML standards. It is widely used in software development to parse and manipulate XML data. The library offers a range of functionalities, including parsing XML documents, validating XML against schemas, and manipulating XML trees. It is a critical component in many applications that deal with XML data.
Vulnerability Detail
The libxml2 library is affected by two security vulnerabilities:
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Integer overflows with XML_PARSE_HUGE (CVE-2022-40303): This vulnerability allows an attacker to trigger integer overflows during XML parsing, potentially leading to memory corruption or denial of service.
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Dictionary corruption caused by entity reference cycles (CVE-2022-40304): This vulnerability allows an attacker to create entity reference cycles in XML documents, leading to dictionary corruption and potential memory corruption or denial of service.
These vulnerabilities can be exploited by an attacker to execute arbitrary code, crash the application, or cause other types of damage.
How To Fix
Minimum fixed version
2.9.13-3.el9_1
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 →
Conclusion
The libxml2 library is affected by two security vulnerabilities that can be exploited by attackers. It is crucial to update the library to the fixed version to mitigate the risk of exploitation. Ensure that all applications using the libxml2 library are also updated. For further support on vulnerability remediation, contact DevNack.com.
See every vulnerability recorded for libxml2 →
FAQ
Libxml2 is a development toolbox providing the implementation of various XML standards. It is used in software development to parse and manipulate XML data.
The security vulnerabilities in libxml2 are integer overflows with XML_PARSE_HUGE (CVE-2022-40303) and dictionary corruption caused by entity reference cycles (CVE-2022-40304).
These vulnerabilities can be exploited by an attacker to execute arbitrary code, crash the application, or cause other types of damage.
To fix these vulnerabilities, update the libxml2 library to version 2.9.13-3.el9_1 or later. Make sure all applications using the library are updated as well.
The updated version of libxml2 can be obtained from the official AlmaLinux repositories or through package management tools like yum or dnf.
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