Stefan Schurtz has discovered multiple vulnerabilities in Serendipity, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed to the "serendipity[filter][entryid]", "serendipity[filter][ip]", "serendipity[filter][title]", and "serendipity[filter][user_agent]" parameters in serendipity_admin.php (when "serendipity[adminModule]" is set to "event_display" and "serendipity[adminAction]" is set to "karmalog") 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.
Successful exploitation requires that the "Karma" plugin is enabled.
The vulnerabilities are confirmed in version 1.6. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly sanitised.
Provided and/or discovered by: Stefan Schurtz
Original Advisory: Stefan Schurtz:
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