Secunia

Some vulnerabilities have been reported in Claroline, which can be exploited by malicious people to conduct cross-site scripting or to disclose sensitive information.

1) Input passed to the "sort" and "dir" parameters in admin/adminusers.php, to the "action" parameter in admin/advancedUserSearch.php, and to the "view" parameter in admin/campusProblem.php is not properly sanitised before being returned to the user. This can be exploited to inject arbitrary HTML and script code in a user's browser session in context of an affected site.

2) Input passed to the "language" parameter in inc/lib/language.lib.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources.

The vulnerabilities are reported in versions prior to 1.8.6.

Solution
Update to version 1.8.6.
Further details available in Customer Area

Provided and/or discovered by
The vendor credits Fernando Munoz.

Changelog
Further details available in Customer Area

Original Advisory
http://www.claroline.net/wiki/index.php/Changelog_1.8.x#Security
1) http://www.claroline.net/forum/viewtopic.php?t=13448
2) http://www.claroline.net/forum/viewtopic.php?t=13533

Deep Links
Links available in Customer Area