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TITLE:
chm2pdf Insecure Temporary Directories

SECUNIA ADVISORY ID:
SA32257

VERIFY ADVISORY:
http://secunia.com/advisories/32257/

CRITICAL:
Not critical

IMPACT:
Privilege escalation, DoS

WHERE:
Local system

SOFTWARE:
chm2pdf 0.x
http://secunia.com/advisories/product/20128/

DESCRIPTION:
A security issue has been reported in chm2pdf, which can be exploited
by malicious, local users to perform certain actions with escalated
privileges or to cause a DoS (Denial of Service).

The security issue is caused due to the "chm2pdf" script using
temporary directories in an insecure manner. This can be exploited to
stop local users from using the application or to remove arbitrary
files via symlink attacks.

The security issue is reported in version 0.9.1. Other versions may
also be affected.

SOLUTION:
Restrict local access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Reported by Karol Lewandowski in a Debian bug report.

ORIGINAL ADVISORY:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=501959

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