{"id":"UBUNTU-CVE-2017-7802","details":"A use-after-free vulnerability can occur when manipulating the DOM during the resize event of an image element. If these elements have been freed due to a lack of strong references, a potentially exploitable crash may occur when the freed elements are accessed. This vulnerability affects Thunderbird \u003c 52.3, Firefox ESR \u003c 52.3, and Firefox \u003c 55.","modified":"2026-02-04T03:43:01.453141Z","published":"2017-08-10T00:00:00Z","related":["USN-3391-1","USN-3416-1"],"upstream":["CVE-2017-7802"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-7802"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3391-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3416-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-7802"}],"affected":[{"package":{"name":"firefox","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/firefox@55.0.1+build2-0ubuntu0.14.04.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"55.0.1+build2-0ubuntu0.14.04.2"}]}],"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","37.0+build2-0ubuntu0.14.04.1","37.0.1+build1-0ubuntu0.14.04.1","37.0.2+build1-0ubuntu0.14.04.1","38.0+build3-0ubuntu0.14.04.1","39.0+build5-0ubuntu0.14.04.1","39.0.3+build2-0ubuntu0.14.04.1","40.0+build4-0ubuntu0.14.04.1","40.0+build4-0ubuntu0.14.04.4","40.0.3+build1-0ubuntu0.14.04.1","41.0+build3-0ubuntu0.14.04.1","41.0.1+build2-0ubuntu0.14.04.1","41.0.2+build2-0ubuntu0.14.04.1","42.0+build2-0ubuntu0.14.04.1","43.0+build1-0ubuntu0.14.04.1","43.0.4+build3-0ubuntu0.14.04.1","44.0+build3-0ubuntu0.14.04.1","44.0.1+build2-0ubuntu0.14.04.1","44.0.2+build1-0ubuntu0.14.04.1","45.0+build2-0ubuntu0.14.04.1","45.0.1+build1-0ubuntu0.14.04.2","45.0.2+build1-0ubuntu0.14.04.1","46.0+build5-0ubuntu0.14.04.2","46.0.1+build1-0ubuntu0.14.04.3","47.0+build3-0ubuntu0.14.04.1","48.0+build2-0ubuntu0.14.04.1","49.0+build4-0ubuntu0.14.04.1","49.0.2+build2-0ubuntu0.14.04.1","50.0+build2-0ubuntu0.14.04.2","50.0.2+build1-0ubuntu0.14.04.1","50.1.0+build2-0ubuntu0.14.04.1","51.0.1+build2-0ubuntu0.14.04.1","51.0.1+build2-0ubuntu0.14.04.2","52.0+build2-0ubuntu0.14.04.1","52.0.1+build2-0ubuntu0.14.04.1","52.0.2+build1-0ubuntu0.14.04.1","53.0+build6-0ubuntu0.14.04.1","53.0.2+build1-0ubuntu0.14.04.2","53.0.3+build1-0ubuntu0.14.04.2","54.0+build3-0ubuntu0.14.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"55.0.1+build2-0ubuntu0.14.04.2","binary_name":"firefox"},{"binary_version":"55.0.1+build2-0ubuntu0.14.04.2","binary_name":"firefox-dev"},{"binary_version":"55.0.1+build2-0ubuntu0.14.04.2","binary_name":"firefox-globalmenu"},{"binary_version":"55.0.1+build2-0ubuntu0.14.04.2","binary_name":"firefox-mozsymbols"},{"binary_version":"55.0.1+build2-0ubuntu0.14.04.2","binary_name":"firefox-testsuite"}],"availability":"No 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