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Mail::Audit Insecure Log File Creation Vulnerability
Secunia Advisory: SA18652
Release Date: 2006-01-31
Popularity: 5,681 views

Critical:
Less critical
Impact: Privilege escalation
Where: Local system
Solution Status: Unpatched

Software:Mail::Audit 2.x

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Description:
Niko Tyni has reported a vulnerability in Mail::Audit, which can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.

The vulnerability is caused due to log files being created insecurely in the "/tmp" directory by Audit.pm. This can be exploited via symlink attacks to create or overwrite arbitrary files with the privileges of the user running a Perl script that uses the affected library.

Successful exploitation requires that logging is enabled.

The vulnerability has been reported in version 2.1. Other versions may also be affected.

Solution:
Grant only trusted users access to affected systems.

Some Linux vendors have issued fixed packages.

Provided and/or discovered by:
Niko Tyni

Original Advisory:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=344029


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