Critical Vulnerability in Socat Package: Improper File Handling in readline.sh
Summary
DEBIAN-CVE-2024-54661: readline.sh in socat before1.8.0.2 relies on the /tmp/$USER/stderr2 file. Affects socat versions < 1.8.0.2-1. Fixed in 1.8.0.2-1. How to fix ↓
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Background
Socat is a command-line based utility that establishes two bidirectional byte streams and transfers data between them. It is widely used for network communication and data transfer. The package is known for its versatility and ability to handle various protocols. However, a vulnerability has been identified in versions prior to 1.8.0.2, which affects its handling of temporary files, potentially exposing sensitive information.
Vulnerability Detail
The vulnerability arises from the reliance on the /tmp/$USER/stderr2 file in the readline.sh script of socat versions before 1.8.0.2. This can lead to unauthorized access to sensitive data, as the file may not be securely managed, allowing attackers to exploit it. The issue is classified as unimportant in urgency but can still pose risks in environments where sensitive data is handled.
How To Fix
Minimum fixed version
1.8.0.2-1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade socatTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary workaround, users can avoid using the readline.sh script or ensure that the /tmp directory is secured and not accessible to unauthorized users. However, updating to the patched version is strongly recommended for long-term security.
Conclusion
The socat package has a critical vulnerability related to improper file handling in its readline.sh script. Users are advised to update to version 1.8.0.2-1 or later to mitigate risks. Understanding and addressing this vulnerability is essential for maintaining the security of systems using socat.
See every vulnerability recorded for socat →
FAQ
The vulnerability is related to improper file handling in the readline.sh script, which can expose sensitive information.
You can check your version of socat by running 'socat -V' in the terminal. If it is below 1.8.0.2, it is affected.
Yes, the vulnerability can potentially expose sensitive data if the temporary file is accessed by unauthorized users.
If an immediate update is not possible, consider securing the /tmp directory and avoiding the use of the readline.sh script.
More information can be found in the official Debian CVE database or by visiting the Vulert website for real-time monitoring of vulnerabilities.
References
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