Qpopper poppassd Insecure Trace File Creation Vulnerability
Secunia Advisory: SA16935
Release Date: 2005-09-26
Last Update: 2005-10-04
Popularity: 7,431 views

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

Software:Qpopper 4.x

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CVE reference:CVE-2005-3098


Description:
kcope has discovered a vulnerability in Qpopper, 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 trace files being created without dropping root privileges, and with insecure file permissions by "poppassd", which is suid root. This can be exploited to create or modify arbitrary files with the privileges of the root user.

The vulnerability has been confirmed in version 4.0.8. Other versions may also be affected.

Solution:
Grant only trusted users access to affected systems.

Provided and/or discovered by:
kcope

Changelog:
2005-10-04: Added CVE reference.

Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2005-September/037377.html


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