Critical Buffer Overflow Vulnerability in man-db Package
Summary
DSA-364-2: man-db - buffer overflows, arbitrary command execution. Affects man-db versions < 2.3.20-18.woody.3. Fixed in 2.3.20-18.woody.3. How to fix ↓
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Background
man-db is a package management tool used in Debian systems for managing manual pages. It provides an efficient way to view and navigate documentation for various commands and applications. However, it has been found to be vulnerable to buffer overflow issues, which can lead to arbitrary command execution, posing a significant security risk.
Vulnerability Detail
The vulnerability in the man-db package stems from improper handling of input data, which can lead to buffer overflows. This flaw allows attackers to execute arbitrary commands on the system, potentially compromising the integrity and confidentiality of the system. The vulnerability was introduced in versions prior to 2.3.20-18.woody.3, and it is critical for users to address this issue to prevent exploitation.
How To Fix
Minimum fixed version
2.3.20-18.woody.3
This is the first release that contains the fix.
sudo apt-get install --only-upgrade man-dbTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can limit the execution of the man-db command or restrict access to the manual pages until the package is updated. This can be done by modifying user permissions or using system-level controls to limit access.
Conclusion
The man-db package has a critical buffer overflow vulnerability that can lead to arbitrary command execution. It is essential for users to update to the patched version to secure their systems. Utilizing tools like Vulert can help monitor and manage vulnerabilities effectively.
See every vulnerability recorded for man-db →
FAQ
A buffer overflow occurs when data exceeds the allocated buffer's storage capacity, leading to adjacent memory being overwritten. This can cause unpredictable behavior and security vulnerabilities.
You can check if your system is affected by using tools like Vulert, which monitors open-source vulnerabilities in your software. Simply upload your manifest file to the Vulert playground.
Failing to fix this vulnerability can lead to unauthorized access, data breaches, and potential system compromise, allowing attackers to execute malicious commands.
Yes, you can restrict access to the man-db command and limit user permissions as a temporary measure until the package is updated.
More information can be found in the Debian security advisories and on platforms like Vulert, which provide real-time alerts for open-source vulnerabilities.
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