[UNIX] CVSTrac filediff Command Execution

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To: list@securiteam.com
Date: 10 Aug 2004 17:58:44 +0200

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  CVSTrac filediff Command Execution
------------------------------------------------------------------------

SUMMARY

 <http://www.cvstrac.org/> CVStrac has been found to contain a
vulnerability that allows a remote attacker to execute arbitrary commands.
The vulnerability occurs because filediff does not properly filter out
incoming user input.

DETAILS

Vulnerable Systems:
 * CVSTrac version 1.1.3

Immune Systems:
 * CVSTrac version 1.1.4 or newer

Sample exploit
By issuing the following request, it is possible to test the vulnerability
on your installation of CVSTrac:
filediff?f=CVSROOT/rcsinfo&v1=1.1&v2=1.2;w;

ADDITIONAL INFORMATION

The information has been provided by <mailto:rtngo@yahoo.com> Richard
Ngo.

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