{"id":"UBUNTU-CVE-2016-4356","details":"The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.","modified":"2026-02-04T04:30:59.698100Z","published":"2016-04-29T00:00:00Z","related":["USN-2982-1"],"upstream":["CVE-2016-4356"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2016-4356"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2015/04/13/5"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2016/04/29/5"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-2982-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2016-4356"}],"affected":[{"package":{"name":"libksba","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/libksba@1.3.0-3ubuntu0.14.04.2?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.0-3ubuntu0.14.04.2"}]}],"versions":["1.3.0-2","1.3.0-2ubuntu1","1.3.0-3","1.3.0-3ubuntu0.14.04.1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.3.0-3ubuntu0.14.04.2","binary_name":"libksba-dev"},{"binary_version":"1.3.0-3ubuntu0.14.04.2","binary_name":"libksba8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-4356.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:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}