AY Systems Web Content System Multiple Remote File Include Vulnerabilities

Bugtraq ID:	19735
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	Aug 28 2006 12:00AM
Updated:	Sep 12 2006 06:17PM
Credit:	SHiKaA has been credited with the discovery of these vulnerabilities.
Vulnerable:	AY System Solutions Web Content System 2.6
Not Vulnerable:	AY System Solutions Web Content System 2.7

AY Systems Web Content System Multiple Remote File Include Vulnerabilities

AY Systems Web Content System is prone multiple remote file-include vulnerabilities because the application fails to properly sanitize user-supplied input.

An attacker can exploit these issues to include an arbitrary remote file containing malicious PHP code and execute it in the context of the webserver process. This may allow the attacker to compromise the application and the underlying system; other attacks are also possible.

AY Systems WCS Version 2.6 is affected by this vulnerability; other versions may also be affected.

AY Systems Web Content System Multiple Remote File Include Vulnerabilities

Attackers can exploit these issues via a web client.

A proof of concept is available.

• /data/vulnerabilities/exploits/aysystems_rfi_poc.txt

AY Systems Web Content System Multiple Remote File Include Vulnerabilities

Solution:
The vendor has released version 2.7 to address these issues; please see the reference section for details.


AY System Solutions Web Content System 2.6

• AY System Solutions Version 2.7
  http://aysad.net/download/?id=AySystemWCS27stable

AY Systems Web Content System Multiple Remote File Include Vulnerabilities

References:

• Ay System Solutions CMS <= v2.6 (main.php) Remote File Inclusion Exploit (SHiKaA)
  
• AY Systems Solutions Homepage (AY Systsems Solutions)