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TITLE:
JHead "DoCommand()" Shell Command Injection Security Issue

SECUNIA ADVISORY ID:
SA32420

VERIFY ADVISORY:
http://secunia.com/advisories/32420/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
JHead 2.x
http://secunia.com/advisories/product/20202/

DESCRIPTION:
A security issue has been reported in JHead, which can be exploited
by malicious, local users to gain escalated privileges.

The security issue is caused due to the "DoCommand()" function
improperly sanitising filenames before using them in a call to
"system()". This can be exploited to execute arbitrary commands with
escalated privileges by tricking a user into using the "-cmd"
argument to process a file having a specially crafted filename.

The security issue is reported in version 2.84. Other versions may
also be affected.

SOLUTION:
Do not process untrusted files using the "-cmd" argument.

PROVIDED AND/OR DISCOVERED BY:
Reported by John Dong in an Ubuntu bug report.

ORIGINAL ADVISORY:
https://bugs.launchpad.net/ubuntu/+source/jhead/+bug/271020

http://www.openwall.com/lists/oss-security/2008/10/16/3

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