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Q1 Factsheets released:

http://secunia.com/resources/factsheets/2011_vendor/


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TITLE:
MediaWiki Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA44142

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44142/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44142

RELEASE DATE:
2011-04-14

DISCUSS ADVISORY:
http://secunia.com/advisories/44142/#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/44142/

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=44142

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:
Some vulnerabilities have been reported in MediaWiki, which can be
exploited by malicious people to conduct cross-site scripting attacks
and bypass certain security restrictions.

1) The application does not properly prevent certain browsers (e.g.
Internet Explorer 6) from guessing the content type based on the
ending of the query URL, which can be exploited to inject and execute
arbitrary HTML and script code in a user's browser session in context
of an affected site.

2) Certain input passed via CSS comments is not properly sanitised by
the wikitext parser before being displayed to the user. 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.

3) The transwiki import feature does not properly restrict access on
form submissions, which can be exploited to perform e.g.
unauthorised, remote imports from certain sources.

This vulnerability requires the transwiki import feature to be
enabled (disabled by default).

The vulnerabilities are reported in versions prior to 1.16.3.

SOLUTION:
Update to version 1.16.3. The vendor suggests the use of URL rewrite
features of web servers (e.g. "rewrite_mod" in Apache) to mitigate
vulnerability #1. Please see the vendor's advisory for more details.

PROVIDED AND/OR DISCOVERED BY:
1) The vendor credits Masato Kinugawa.
2) The vendor credits Suffusion of Yellow.
3) Reported by the vendor.

ORIGINAL ADVISORY:
MediaWiki:
http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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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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Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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