TITLE:
MediaWiki Language Option PHP Code Execution Vulnerability

SECUNIA ADVISORY ID:
SA17866

VERIFY ADVISORY:
http://secunia.com/advisories/17866/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

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

DESCRIPTION:
A vulnerability has been reported in MediaWiki, which can be
exploited by malicious people to compromise a vulnerable system.

Input passed to the user language option isn't properly verified,
before it is used in an "eval()" call. This can be exploited to
inject and execute arbitrary PHP code.

The vulnerability has been reported in versions prior to 1.5.3 for
the 1.5.x releases.

SOLUTION:
Update to version 1.5.3.
http://www.mediawiki.org/wiki/Download

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

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