Eric Romang has reported a vulnerability in Net-snmp, 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 fixproc creating temporary files insecurely. This can be exploited via symlink attacks to create or overwrite arbitrary files on the system with the privileges of the user running fixproc.

It may potentially also be possible to execute arbitrary code with escalated privileges by exploiting a race condition to manipulate the contents of the temporary file before it's executed.

The vulnerability has been reported in versions 5.2.1 and prior.

Solution
The vulnerability has been fixed in versions 5.0.10 and 5.1.3.pre1.

Provided and/or discovered by
Eric Romang

Changelog
Further details available to Secunia VIM customers

Original Advisory
Eric Romang:
http://www.zataz.net/adviso/net-snmp-05182005.txt

Deep Links
Links available to Secunia VIM customers