{"id":"UBUNTU-CVE-2013-6401","details":"Jansson, possibly 2.4 and earlier, does not restrict the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via a crafted JSON document.","modified":"2026-04-22T09:25:24.040423Z","published":"2014-03-21T01:04:00Z","upstream":["CVE-2013-6401"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-6401"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2014/02/11/7"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-6401"}],"affected":[{"package":{"name":"jansson","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/jansson@2.5-2ubuntu0.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.5-2ubuntu0.1"}]}],"versions":["2.4-1","2.5-1","2.5-1ubuntu1","2.5-2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libjansson4","binary_version":"2.5-2ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-6401.json"}}],"schema_version":"1.7.5","severity":[{"type":"Ubuntu","score":"medium"}]}