Critical Assertion Vulnerability in TinyXML2 Package
Summary
DEBIAN-CVE-2024-50615: TinyXML2 through 10.0.0 has a reachable assertion for UINT_MAX/digit, that may lead to application exit, in tinyxml2.cpp XMLUtil::GetCharacterRef. Affects tinyxml2 versions < 10.1.0+dfsg-1. Fixed in 10.1.0+dfsg-1. How to fix ↓
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Background
TinyXML2 is a lightweight, simple, and efficient XML parser designed for C++ applications. It is widely used for parsing XML data due to its ease of use and minimal overhead. However, versions up to 10.0.0 are susceptible to a critical vulnerability that can lead to application crashes under certain conditions.
Vulnerability Detail
The vulnerability identified as DEBIAN-CVE-2024-50615 arises from a reachable assertion in the TinyXML2 library, specifically in the XMLUtil::GetCharacterRef function. This issue occurs when the library attempts to handle character references that exceed the UINT_MAX limit, potentially causing the application to exit unexpectedly. This vulnerability can be exploited by attackers to disrupt the normal operation of applications relying on TinyXML2 for XML parsing.
How To Fix
Minimum fixed version
10.1.0+dfsg-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade tinyxml2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, you can implement input validation to ensure that character references do not exceed the UINT_MAX limit, thereby preventing the assertion from being triggered. However, this is not a permanent fix and updating the package is strongly advised.
Conclusion
The TinyXML2 package has a critical vulnerability that can lead to application crashes due to a reachable assertion. It is essential to update to the patched version to mitigate this risk. For those unable to update immediately, implementing input validation can serve as a temporary measure.
See every vulnerability recorded for tinyxml2 →
FAQ
TinyXML2 is a small and efficient XML parser for C++ that allows developers to easily read and write XML data.
The vulnerability allows for a reachable assertion that may lead to application crashes when handling certain character references.
You can use the Vulert platform to monitor and alert for open-source vulnerabilities in your software. Visit Vulert Scanner to check if your application is affected by this vulnerability.
Yes, the vulnerability has been patched in TinyXML2 version 10.1.0+dfsg-1 and later.
If immediate updates are not possible, implement input validation as a temporary workaround to prevent the assertion from being triggered.
References
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