The Special:Contributions page in MediaWiki before 1.22.0 allows remote attackers to determine if an IP is autoblocked via the "Change block" text.Referenceshttp://www.openwall.com/lists/oss-security/2015/08/27/6https://github.com/wikimedia/mediawiki/commit/dc2966bd05b69321300c63fd0bd78e7c78ecea6ehttps://phabricator.wikimedia.org/T48457http://www.openwall.com/lists/oss-security/2015/08/12/6https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-August/000179.htmlhttp://lists.fedoraproject.org/pipermail/package-announce/2015-August/165193.html
