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Flat Chat "Chat Name" PHP Code Execution
Secunia Advisory: SA24433
Release Date: 2007-03-08
Last Update: 2007-03-14
Popularity: 5,687 views

Critical:
Highly critical
Impact: System access
Where: From remote
Solution Status: Unpatched

Software:Flat Chat 2.x

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CVE reference:CVE-2007-1394


Description:
Dj7xpl has discovered a vulnerability in Flat Chat, which can be exploited by malicious people to compromise a vulnerable system.

Input passed to the "Chat Name" form field in startsession.php is not properly sanitised before it is written to the online.txt file which is included by the users.php script. This can be exploited to execute arbitrary PHP code.

The vulnerability is confirmed in version 2.0. Other versions may also be affected.

Solution:
Edit the source code to ensure that input is properly sanitised.

Provided and/or discovered by:
Dj7xpl

Changelog:
2007-03-14: Added CVE reference.

Original Advisory:
http://milw0rm.com/exploits/3428


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