{"id":"UBUNTU-CVE-2015-2942","details":"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vulnerability than CVE-2015-2937.","modified":"2025-07-16T08:17:45.461414Z","published":"2015-04-13T14:59:00Z","withdrawn":"2025-07-18T16:43:11Z","upstream":["CVE-2015-2942"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-2942"},{"type":"REPORT","url":"https://lists.wikimedia.org/pipermail/mediawiki-announce/2015-March/000175.html"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2015/04/01/1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-2942"}],"affected":[{"package":{"name":"mediawiki","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/mediawiki@1:1.27.4-3?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:1.27.4-3"}]}],"versions":["1:1.27.3-1","1:1.27.4-1","1:1.27.4-2"],"ecosystem_specific":{"binaries":[{"binary_name":"mediawiki","binary_version":"1:1.27.4-3"},{"binary_name":"mediawiki-classes","binary_version":"1:1.27.4-3"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-2942.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}