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TITLE:
MediaWiki "uselang" Cross-Site Scripting Vulnerability

SECUNIA ADVISORY ID:
SA49484

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/49484/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=49484

RELEASE DATE:
2012-06-14

DISCUSS ADVISORY:
http://secunia.com/advisories/49484/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/49484/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=49484

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A vulnerability has been reported in MediaWiki, which can be
exploited by malicious people to conduct cross-site scripting
attacks.

Input passed via the "uselang" parameter to index.php/Main_page is
not properly sanitised in the "outputPage()" function in
includes/SkinTemplate.php 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.

The vulnerability is reported in versions prior to 1.17.5, 1.18.4,
and 1.19.1.

SOLUTION:
Update to version 1.17.5, 1.18.4, or 1.19.1.

PROVIDED AND/OR DISCOVERED BY:
Reported in a MediaWiki bug ticket by Chris Steipp.

ORIGINAL ADVISORY:
http://lists.wikimedia.org/pipermail/mediawiki-announce/2012-June/000116.html
http://lists.wikimedia.org/pipermail/mediawiki-announce/2012-June/000117.html
http://lists.wikimedia.org/pipermail/mediawiki-announce/2012-June/000118.html
https://www.mediawiki.org/wiki/Release_notes/1.17
https://www.mediawiki.org/wiki/Release_notes/1.18
https://www.mediawiki.org/wiki/Release_notes/1.19

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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