TITLE:
pstotext Filename Shell Command Injection Vulnerability

SECUNIA ADVISORY ID:
SA20012

VERIFY ADVISORY:
http://secunia.com/advisories/20012/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
pstotext 1.x
http://secunia.com/product/5431/

DESCRIPTION:
Brian May has reported a vulnerability in pstotext, which potentially
can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to an error in sanitising the
filename supplied via the command line. This can be exploited to
execute arbitrary commands when pstotext is run with a specially
crafted command line that contains shell commands.

Successful exploitation requires that pstotext is run with command
line input from non-trusted sources e.g. via a CGI application.

The vulnerability has been reported in version 1.9. Other versions
may also be affected.

SOLUTION:
Sanitise user supplied filenames before passing them as command line
arguments to pstotext.

PROVIDED AND/OR DISCOVERED BY:
Brian May

ORIGINAL ADVISORY:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=356988

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