Cross-Site Scripting and Local File Inclusion in Phorum

Some vulnerabilities have been discovered in Phorum, which can be exploited by 
malicious people to conduct cross-site scripting attacks, disclose sensitive 
information, and potentially compromise a vulnerable system. 


1) Input passed to the "template" parameter in pm.php isn't properly verified, 
before it is used to include files. This can be exploited to include arbitrary 
files from local resources.

Example:
http://[host]/pm.php?1,page=1&template=[file]%00



Another unspecified parameter is reportedly also affected. 


Successful exploitation requires that "register_globals" is enabled and that 
"magic_quotes_gpc" is disabled.

This can further be exploited to include arbitrary PHP code injected into 
Apache web logs.

2) Input passed to the "mode" parameter in posting.php isn't properly sanitised 
before being returned to the user. This can be exploited to execute arbitrary 
HTML and script code in a user's browser session in context of an affected site.

The vulnerabilities have been confirmed in version 5.1.14. Prior versions may 
also be affected.



 

Solution:
Update to version 5.1.15.
http://www.phorum.org/downloads.php