CVE-2014-5241 Information

Description

The JSONP endpoint in includes/api/ApiFormatJson.php in MediaWiki before 1.19.18 1.20.x through 1.22.x before 1.22.9 and 1.23.x before 1.23.2 accepts certain long callback values and does not restrict the initial bytes of a JSONP response which allows remote attackers to conduct cross-site request forgery (CSRF) attacks and obtain sensitive information via a crafted OBJECT element with SWF content consistent with a restricted character set.

Reference

http://advisories.mageia.org/MGASA-2014-0309.html http://openwall.com/lists/oss-security/2014/08/14/5 http://secunia.com/advisories/59738 http://www.debian.org/security/2014/dsa-3011 http://www.mandriva.com/security/advisories?name=MDVSA-2014:153 https://bugzilla.wikimedia.org/show_bug.cgi?id=68187 https://lists.wikimedia.org/pipermail/mediawiki-announce/2014-July/000157.html