{"id":"UBUNTU-CVE-2017-8911","details":"An integer underflow has been identified in the unicode_to_utf8() function in tnef 1.4.14. This might lead to invalid write operations, controlled by an attacker.","modified":"2025-09-08T16:44:15Z","published":"2017-05-12T07:29:00Z","upstream":["CVE-2017-8911"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-8911"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-8911"}],"affected":[{"package":{"name":"tnef","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/tnef@1.4.9-1+deb8u3build0.14.04.1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.9-1+deb8u3build0.14.04.1"}]}],"versions":["1.4.9-1","1.4.9-1+deb8u2build0.14.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"tnef","binary_version":"1.4.9-1+deb8u3build0.14.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-8911.json"}},{"package":{"name":"tnef","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/tnef@1.4.9-1+deb8u3build0.16.04.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.9-1+deb8u3build0.16.04.1"}]}],"versions":["1.4.9-1","1.4.9-1+deb8u2build0.16.04.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"tnef","binary_version":"1.4.9-1+deb8u3build0.16.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-8911.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}