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Mandriva Linux Security Advisory MDVSA-2015:200
http://www.mandriva.com/en/support/security/
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Package : mediawiki
Date : April 10, 2015
Affected: Business Server 1.0
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Problem Description:

Updated mediawiki packages fix security vulnerabilities:

In MediaWiki before 1.23.9, one could circumvent the SVG MIME blacklist
for embedded resources. This allowed an attacker to embed JavaScript
in the SVG (CVE-2015-2931).

In MediaWiki before 1.23.9, the SVG filter to prevent injecting
JavaScript using animate elements was incorrect (CVE-2015-2932).

In MediaWiki before 1.23.9, a stored XSS vulnerability exists due
to the way attributes were expanded in MediaWiki's Html class, in
combination with LanguageConverter substitutions (CVE-2015-2933).

In MediaWiki before 1.23.9, MediaWiki's SVG filtering could be bypassed
with entity encoding under the Zend interpreter. This could be used
to inject JavaScript (CVE-2015-2934).

In MediaWiki before 1.23.9, one could bypass the style filtering for
SVG files to load external resources. This could violate the anonymity
of users viewing the SVG (CVE-2015-2935).

In MediaWiki before 1.23.9, MediaWiki versions using PBKDF2 for
password hashing (not the default for 1.23) are vulnerable to DoS
attacks using extremely long passwords (CVE-2015-2936).

In MediaWiki before 1.23.9, MediaWiki is vulnerable to Quadratic
Blowup DoS attacks, under both HHVM and Zend PHP (CVE-2015-2937).

In MediaWiki before 1.23.9, the MediaWiki feature allowing a user to
preview another user's custom JavaScript could be abused for privilege
escalation (CVE-2015-2938).

In MediaWiki before 1.23.9, function names were not sanitized in Lua
error backtraces, which could lead to XSS (CVE-2015-2939).

In MediaWiki before 1.23.9, the CheckUser extension did not prevent
CSRF attacks on the form allowing checkusers to look up sensitive
information about other users. Since the use of CheckUser is logged,
the CSRF could be abused to defame a trusted user or flood the logs
with noise (CVE-2015-2940).

The mediawiki package has been updated to version 1.23.9, fixing
these issues and other bugs.
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References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2931
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2932
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2933
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2934
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2935
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2936
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2937
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2938
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2939
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2940
http://advisories.mageia.org/MGASA-2015-0142.html
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Updated Packages:

Mandriva Business Server 1/X86_64:
0a5719c634720b2f09037024a6d92d87 mbs1/x86_64/mediawiki-1.23.9-1.mbs1.noarch.rpm
c1e4e0b2eaea6bc47bf1d97af2d8de9d mbs1/x86_64/mediawiki-mysql-1.23.9-1.mbs1.noarch.rpm
305c803833c271e39ae22f8ab5b04db1 mbs1/x86_64/mediawiki-pgsql-1.23.9-1.mbs1.noarch.rpm
a809cbf86973b4735d0fb874ebbe392b mbs1/x86_64/mediawiki-sqlite-1.23.9-1.mbs1.noarch.rpm
0b17278c7df09036f5767b88fbc82be7 mbs1/SRPMS/mediawiki-1.23.9-1.mbs1.src.rpm
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To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg –recv-keys –keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/en/support/security/advisories/

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
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Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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