Multiple vulnerabilities have been reported in Piwik, where some have unknown impacts and others can be exploited by malicious people to conduct cross-site scripting and script insertion attacks.
1) Multiple vulnerabilities are caused due to unspecified errors. No further information is currently available.
2) Input passed to the "url" parameter in index.php (when "module" is set to "Proxy" and "action" is set to "redirect") 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.
3) Input passed to the "url" parameter in piwik.php (when "idsite" is valid and "rec" is set to "1") is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed.
4) Input passed via the "layout" parameter to index.php when modifying an anonymous user's layout is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed.
Successful exploitation of this vulnerability requires that anonymous users are allowed access to the application.
The vulnerabilities are reported in versions prior to 1.6.
Solution: Update to version 1.6.
Provided and/or discovered by: 2 - 4) Krzysztof Kotowicz
It is currently unclear who reported the remaining vulnerabilities as the Piwik 1.6 release notes provide a bundled list of credits only. This section will be updated when/if the original reporter provides more information.
Original Advisory: Piwik:
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Subject: Piwik Multiple Vulnerabilities
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