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