MediaWiki before 1.19.24, 1.2x before 1.23.9, and 1.24.x before 1.24.2, when using HHVM, allows remote attackers to cause a denial of service (CPU and memory consumption) via a large number of nested entity references in an (1) SVG file or (2) XMP metadata in a PDF file, aka a "billion laughs attack," a different vulnerability than CVE-2015-2937.
Weaknesses in this category are related to improper management of system resources.
Link | Tags |
---|---|
https://security.gentoo.org/glsa/201510-05 | vendor advisory |
http://www.securityfocus.com/bid/73477 | vdb entry |
http://www.openwall.com/lists/oss-security/2015/04/07/3 | mailing list |
http://www.openwall.com/lists/oss-security/2015/04/01/1 | mailing list |
https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html | patch vendor advisory mailing list |
https://phabricator.wikimedia.org/T85848 | exploit |