Phorum 'image/bmp' MIME Type HTML Injection Vulnerability

Bugtraq ID:	35134
Class:	Input Validation Error
CVE:
Remote:	Yes
Local:	No
Published:	May 28 2009 12:00AM
Updated:	May 28 2009 06:49PM
Credit:	Jacques Copeau
Vulnerable:	Phorum Phorum 5.2.10 -RC1 Phorum Phorum 5.2.10 Phorum Phorum 5.2.8 Phorum Phorum 5.2.6 Phorum Phorum 5.1.22 Phorum Phorum 5.1.20 Phorum Phorum 5.1.18 Phorum Phorum 5.1.15 Phorum Phorum 5.1.14 Phorum Phorum 5.1.13 Phorum Phorum 5.0.18 Phorum Phorum 5.0.17 a Phorum Phorum 5.0.16 Phorum Phorum 5.0.14 Phorum Phorum 5.0.13 Phorum Phorum 5.0.12 Phorum Phorum 5.0.11 Phorum Phorum 5.0.10 Phorum Phorum 5.0.9 Phorum Phorum 5.0.7 BETA Phorum Phorum 5.0.3 BETA Phorum Phorum 5.2-dev Phorum Phorum 5.2 Phorum Phorum 5.0.15a Phorum Phorum 5.0.14
Not Vulnerable:	Phorum Phorum 5.2.11

Phorum 'image/bmp' MIME Type HTML Injection Vulnerability

Phorum is prone to an HTML-injection vulnerability because the application fails to properly sanitize user-supplied input.

Attacker-supplied HTML and script code would execute in the context of the affected site, potentially allowing the attacker to steal cookie-based authentication credentials or to control how the site is rendered to the user; other attacks are also possible.

Phorum 'image/bmp' MIME Type HTML Injection Vulnerability

Attackers can use a browser to exploit this issue.

Phorum 'image/bmp' MIME Type HTML Injection Vulnerability

Solution:
The vendor has released updates. Please see the references for details.

Phorum 'image/bmp' MIME Type HTML Injection Vulnerability

References:

• Phorum Homepage (Phorum)
  
• Phorum-5.2.11 Released - SECURITY FIX (Thomas Seifert)
  
• Survey: "MIME/Content-Type-Sniffing" Issues in Image Uploads in Forum Scripts (Jacques Copeau )