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TITLE:
VideoCache vccleaner Insecure Logfile Access Security Issue

SECUNIA ADVISORY ID:
SA37733

VERIFY ADVISORY:
http://secunia.com/advisories/37733/

DESCRIPTION:
Dominick LaTrappe has discovered a security issue in VideoCache,
which can be exploited by malicious, local users to perform certain
actions with escalated privileges.

The security issue is caused due to the vccleaner utility accessing
logfiles in an insecure manner, which can be exploited to e.g. write
to arbitrary files via symlink attacks.

Successful exploitation requires write access to the
"/var/log/videocache" directory (usually restricted to squid:squid).

The security issue is confirmed in version 1.9.2. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Dominick LaTrappe

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/fulldisclosure/2009-12/0366.html

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