TITLE:
Berkeley MPEG Tools Multiple Insecure Temporary File Creation

SECUNIA ADVISORY ID:
SA17008

VERIFY ADVISORY:
http://secunia.com/advisories/17008/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
Berkeley MPEG Tools 1.x
http://secunia.com/product/5800/

DESCRIPTION:
Mike Frysinger has reported some vulnerabilities in Berkeley MPEG
Tools, which can be exploited by malicious, local users to perform
certain actions on a vulnerable system with escalated privileges.

The vulnerabilities are caused due to temporary files being created
insecurely in "/tmp" by "mpeg_encode/parallel.c", by the convert
utilities "eyuvtojpeg", "vidtoeyuv", "vidtojpeg", "vidtoppm", and
"eyuvtoppm", and by the Makefile for the "test" make target. This can
be exploited via symlink attacks to create or overwrite arbitrary
files with the privileges of the user running the affected
application.

The vulnerabilities have been reported in version 1.5b. 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:
Mike Frysinger

ORIGINAL ADVISORY:
http://bugs.gentoo.org/show_bug.cgi?id=107344

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