[Mediawiki-l] MediaWiki 1.19.0beta2

Sam Reed reedy at wikimedia.org
Thu Mar 22 19:37:34 UTC 2012

I'm happy to announce the availability of the second beta release of the
new MediaWiki 1.19 release series.

Please try it out and let us know what you think. Don't run it on any
wikis that you really care about, unless you are both very brave and
very confident in your MediaWiki administration skills.

MediaWiki 1.19 is a large release that contains many new features and
bug fixes. This is a summary of the major changes of interest to users.
You can consult the RELEASE-NOTES-1.19 file for the full list of changes
in this version.

Five security issues were discovered.

It was discovered that the api had a cross-site request forgery (CSRF)
vulnerability in the block/unblock modules. It was possible for a user
account with the block privileges to block or unblock another user without
providing a token.

For more details, see https://bugzilla.wikimedia.org/show_bug.cgi?id=34212

It was discovered that the resource loader can leak certain kinds of private
data across domain origin boundaries, by providing the data as an executable
JavaScript file. In MediaWiki 1.18 and later, this includes the leaking of
protection tokens. This allows compromise of the wiki's user accounts, say
changing the user's email address and then requesting a password reset.

For more details, see https://bugzilla.wikimedia.org/show_bug.cgi?id=34907

Jan Schejbal of Hatforce.com discovered a cross-site request forgery (CSRF)
vulnerability in Special:Upload. Modern browsers (since at least as early as
December 2010) are able to post file uploads without user interaction,
violating previous security assumptions within MediaWiki. 

Depending on the wiki's configuration, this vulnerability could lead to
compromise, especially on private wikis where the set of allowed file types
broader than on public wikis. Note that CSRF allows compromise of a wiki
an external website even if the wiki is behind a firewall.

For more details, see https://bugzilla.wikimedia.org/show_bug.cgi?id=35317

George Argyros and Aggelos Kiayias reported that the method used to generate
password reset tokens is not sufficiently secure. Instead we use various
secure random number generators, depending on what is available on the
platform. Windows users are strongly advised to install either the openssl
extension or the mcrypt extension for PHP so that MediaWiki can take
of the cryptographic random number facility provided by Windows.

Any extension developers using mt_rand() to generate random numbers in
where security is required are encouraged to instead make use of the
MWCryptRand class introduced with this release.

For more details, see https://bugzilla.wikimedia.org/show_bug.cgi?id=35078

A long-standing bug in the wikitext parser (bug 22555) was discovered to
security implications. In the presence of the popular CharInsert extension,
leads to cross-site scripting (XSS). XSS may be possible with other
or perhaps even the MediaWiki core alone, although this is not confirmed at
this time. A denial-of-service attack (infinite loop) is also possible
regardless of configuration.

For more details, see https://bugzilla.wikimedia.org/show_bug.cgi?id=35315

                             What's new?

MediaWiki 1.19 brings the usual host of various bugfixes and new features.

Comprehensive list of what's new is in the release notes.

* Bumped MySQL version requirement to 5.0.2.
* Disable the partial HTML and MathML rendering options for Math,
  and render as PNG by  default.
  * MathML mode was so incomplete most people thought it simply didn't work.
* New skins/common/*.css files usable by skins instead of having to copy
piles of
  generic styles from MonoBook or Vector's css.
* The default user signature now contains a talk link in addition to the
user link.
* Searching blocked usernames in block log is now clearer.
* Better timezone recognition in user preferences.
* Extensions can now participate in the extraction of titles from URL paths.
* The command-line installer supports various RDBMSes better.
* The interwiki links table can now be accessed also when the interwiki
  is used (used in the API and the Interwiki extension).

- --------------------
* More gender support (for instance in user lists).
* Add languages: Canadian English.
* Language converter improved, e.g. it now works depending on the page
  content language.
* Time and number-formatting magic words also now depend on the page
  content language.
* Bidirectional support further improved after 1.18.

Release notes
- -------------
Full release notes:

Co-inciding with these security releases, the MediaWiki source code
repository has
moved from SVN (at https://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3)
to Git (https://gerrit.wikimedia.org/gitweb/mediawiki/core.git). So the
commits for these releases will not be appearing in our SVN repository. If
you use
SVN checkouts of MediaWiki for version control, you need to migrate these to
If you up are using tarballs, there should be no change in the process for

Please note that any WMF-deployed extensions have also been migrated to Git
also, along with some other non WMF-maintained ones.

Please bear with us, some of the Git related links for this release may not
work instantly,
but should later on.

To do a simple Git clone, the command is:
git clone https://gerrit.wikimedia.org/r/p/mediawiki/core.git

More information is available at https://www.mediawiki.org/wiki/Git

For more help, please visit the #mediawiki IRC channel on freenode.net
irc://irc.freenode.net/mediawiki or email The MediaWiki-l mailing list
at mediawiki-l at lists.wikimedia.org.


Patch to previous version (1.19.0beta1), without interface text:
Interface text changes:

GPG signatures:

Public keys:

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