Steam 'steam://' Cross Site Scripting Vulnerability

Bugtraq ID:	35036
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	May 19 2009 12:00AM
Updated:	May 21 2009 05:20AM
Credit:	Gabriel Lima
Vulnerable:	Valve Software Steam 0 - Microsoft Windows 2000 Professional - Microsoft Windows 95 - Microsoft Windows 98 - Microsoft Windows 98SE - Microsoft Windows ME - Microsoft Windows NT 4.0
Not Vulnerable:

Steam 'steam://' Cross Site Scripting Vulnerability

Steam is prone to a cross-site scripting vulnerability because it fails to properly sanitize user-supplied input.

An attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user in the context of the affected site. This may allow the attacker to steal cookie-based authentication credentials and to launch other attacks.

Steam 'steam://' Cross Site Scripting Vulnerability

Attackers can exploit this issue by enticing an unsuspecting user to follow a malicious URI.

Steam 'steam://' Cross Site Scripting Vulnerability

Solution:
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Steam 'steam://' Cross Site Scripting Vulnerability

References:

• Valve Software Homepage (Valve Software)
  
• Vulnerabilidade no STEAM: Phishing e XSS na Steam Store (Gabriel Coutinho de Lima )