{"id":"UBUNTU-CVE-2015-0803","details":"The HTMLSourceElement::AfterSetAttr function in Mozilla Firefox before 37.0 does not properly constrain the original data type of a casted value during the setting of a SOURCE element's attributes, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via a crafted HTML document.","modified":"2026-04-22T10:01:23.866372Z","published":"2015-04-01T00:00:00Z","related":["USN-2550-1"],"upstream":["CVE-2015-0803"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-0803"},{"type":"REPORT","url":"https://www.mozilla.org/en-US/security/advisories/mfsa2015-39/"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2550-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-0803"}],"affected":[{"package":{"name":"firefox","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/firefox@37.0+build2-0ubuntu0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"37.0+build2-0ubuntu0.14.04.1"}]}],"versions":["24.0+build1-0ubuntu1","25.0+build3-0ubuntu0.13.10.1","28.0~b2+build1-0ubuntu2","28.0+build1-0ubuntu1","28.0+build2-0ubuntu1","28.0+build2-0ubuntu2","29.0+build1-0ubuntu0.14.04.2","30.0+build1-0ubuntu0.14.04.3","31.0+build1-0ubuntu0.14.04.1","32.0+build1-0ubuntu0.14.04.1","32.0.3+build1-0ubuntu0.14.04.1","33.0+build2-0ubuntu0.14.04.1","34.0+build2-0ubuntu0.14.04.1","35.0+build3-0ubuntu0.14.04.2","35.0.1+build1-0ubuntu0.14.04.1","36.0+build2-0ubuntu0.14.04.4","36.0.1+build2-0ubuntu0.14.04.1","36.0.4+build1-0ubuntu0.14.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"37.0+build2-0ubuntu0.14.04.1","binary_name":"firefox"},{"binary_version":"37.0+build2-0ubuntu0.14.04.1","binary_name":"firefox-globalmenu"},{"binary_version":"37.0+build2-0ubuntu0.14.04.1","binary_name":"firefox-mozsymbols"},{"binary_version":"37.0+build2-0ubuntu0.14.04.1","binary_name":"firefox-testsuite"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-0803.json"}}],"schema_version":"1.7.5","severity":[{"type":"Ubuntu","score":"medium"}]}