Trac: Cross-site scripting vulnerability

Background

Trac is a minimalistic web-based project management, wiki and bug tracking system including a Subversion interface.

Description

Christophe Truc discovered that Trac fails to properly sanitize input passed in the URL.

Impact

A remote attacker could exploit this to inject and execute malicious script code or to steal cookie-based authentication credentials, potentially compromising the victim’s browser.

Workaround

There is no known workaround at this time.

Resolution

All Trac users should upgrade to the latest available version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=www-apps/trac-0.9.3"

Note: Users with the vhosts USE flag set should manually use webapp-config to finalize the update.