mediawiki - security update

Several vulnerabilities were discovered in MediaWiki, a wiki engine.
The Common Vulnerabilities and Exposures project identifies the following
issues:

• CVE-2013-2031
  Cross-site scripting attack via valid UTF-7 encoded sequences
  in a SVG file.
• CVE-2013-4567
  & CVE-2013-4568
  Kevin Israel (Wikipedia user PleaseStand) reported two ways
  to inject Javascript due to an incomplete blacklist in the
  CSS sanitizer function.
• CVE-2013-4572
  MediaWiki and the CentralNotice extension were incorrectly setting
  cache headers when a user was autocreated, causing the user’s
  session cookies to be cached, and returned to other users.
• CVE-2013-6452
  Chris from RationalWiki reported that SVG files could be
  uploaded that include external stylesheets, which could lead to
  XSS when an XSL was used to include JavaScript.
• CVE-2013-6453
  MediaWiki’s SVG sanitization could be bypassed when the XML was
  considered invalid.
• CVE-2013-6454
  MediaWiki’s CSS sanitization did not filter -o-link attributes,
  which could be used to execute JavaScript in Opera 12.
• CVE-2013-6472
  MediaWiki displayed some information about deleted pages in
  the log API, enhanced RecentChanges, and user watchlists.
• CVE-2014-1610
  A remote code execution vulnerability existed if file upload
  support for DjVu (natively handled) or PDF files (in
  combination with the PdfHandler extension) was enabled.
  Neither file type is enabled by default in MediaWiki.
• CVE-2014-2665
  Cross site request forgery in login form: an attacker could login
  a victim as the attacker.

For the stable distribution (wheezy), these problems have been fixed in
version 1:1.19.14+dfsg-0+deb7u1 of the mediawiki package and 3.5~deb7u1
of the mediawiki-extensions package.

For the unstable distribution (sid), these problems have been fixed in
version 1:1.19.14+dfsg-1 of the mediawiki package and 3.5 of the
mediawiki-extensions package.

We recommend that you upgrade your mediawiki packages.