BosClassifieds Classified Ads System "returnTo" Cross-Site Scripting

Sunday, 16 March 2008

Russ McRee has reported a vulnerability in BosClassifieds Classified Ads System, which can be exploited by malicious people to conduct cross-site scripting attacks.

Input passed to the "returnTo" parameter in account.php is not 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 vulnerability is reported in version 3.0. Other versions may also be affected.

Apply the official patch. Contact the vendor for details.

Provided and/or discovered by:
Russ McRee

2008-03-11: Added CVE reference. Updated "Solution" section.

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