TITLE: PunBB Private Message System Module Two Vulnerabilities
SECUNIA ADVISORY ID: SA13201
VERIFY ADVISORY: http://secunia.com/advisories/13201/
CRITICAL: Moderately critical
IMPACT: Cross Site Scripting, Exposure of sensitive information
WHERE: >From remote
SOFTWARE: Private Message System (module for PunBB) 1.x http://secunia.com/product/4255/
DESCRIPTION: Digital-X has reported two vulnerabilities in Private Message System module for PunBB, which can be exploited by malicious people to conduct cross-site scripting attacks and disclose sensitive information.
1) Input passed to the "tid" parameter in "message_send.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 a vulnerable site.
2) The ownership of private messages isn't properly verified in "message_send.php". This can be exploited to view private messages, which belong to another user.
The vulnerabilities have been reported in version 1.1.3. Other versions may also be affected.
SOLUTION: Edit the source code to ensure that input is properly sanitised and that only the owners of a message can view it.
PROVIDED AND/OR DISCOVERED BY: Digital-X
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