Integer Underflow Vulnerability in Lhasa
Summary
DSA-3540-1: lhasa - security update. Affects lhasa versions < 0.0.7-2+deb7u1. Fixed in 0.0.7-2+deb7u1. How to fix ↓
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Background
Lhasa is an open-source lzh archive decompressor used for extracting files from lzh archives. It provides functionality to handle compressed archives efficiently. However, a vulnerability has been discovered in Lhasa that allows an attacker to execute arbitrary code by exploiting an integer underflow. This vulnerability can be triggered when processing a malformed archive.
Vulnerability Detail
The integer underflow vulnerability in Lhasa arises due to a flaw in the decompression algorithm. An attacker can create a specially crafted lzh archive that triggers the underflow when processed by Lhasa. By exploiting this vulnerability, an attacker can execute arbitrary code on the target system, potentially leading to remote code execution or other malicious activities.
How To Fix
Minimum fixed version
0.0.7-2+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade lhasaTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The integer underflow vulnerability in Lhasa can be exploited by processing a specially crafted lzh archive. To mitigate this vulnerability, it is crucial to upgrade the Lhasa package to the fixed version provided for your distribution. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for lhasa →
FAQ
Lhasa is an open-source lzh archive decompressor used for extracting files from lzh archives. It provides efficient handling of compressed archives.
The vulnerability allows an attacker to execute arbitrary code on the target system by exploiting an integer underflow. This can lead to remote code execution or other malicious activities.
To fix this vulnerability, upgrade the Lhasa package to the latest version available for your distribution. Refer to the 'how_to_fix' section for specific version information.
No specific workarounds have been mentioned for this vulnerability. It is recommended to upgrade to the fixed version of Lhasa.
You can find more information about this vulnerability in the Debian Security Advisory DSA-3540-1. Refer to the 'meta' section for the link to the advisory.
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