TITLE:
MediaWiki Script Insertion Vulnerabilities

SECUNIA ADVISORY ID:
SA20189

VERIFY ADVISORY:
http://secunia.com/advisories/20189/

CRITICAL:
Moderately critical

IMPACT:
Cross Site Scripting

WHERE:
>From remote

SOFTWARE:
MediaWiki 1.x
http://secunia.com/product/2546/

DESCRIPTION:
Nick Jenkins has reported some vulnerabilities in MediaWiki, which
can be exploited by malicious people to conduct script insertion
attacks.

Some input passed in the variable handler isn't properly sanitised
before being used. This can be exploited to inject arbitrary HTML and
script code, which will be executed in a user's browser session in
context of an affected site when the malicious user data is viewed.

The vulnerabilities have been reported in versions prior to 1.6.6 for
the 1.6 branch.

SOLUTION:
Update to version 1.6.6.
http://www.mediawiki.org/wiki/Download

PROVIDED AND/OR DISCOVERED BY:
Nick Jenkins

ORIGINAL ADVISORY:
http://bugzilla.wikimedia.org/show_bug.cgi?id=6055

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