{"id":"CVE-2016-4356","aliases":["BELL-CVE-2016-4356","DEBIAN-CVE-2016-4356","EUVD-2016-5356","GHSA-mhm6-qhc6-f9f7","UBUNTU-CVE-2016-4356","USN-2982-1"],"status":"published","title":"The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote...","description":"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.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03278,"percentile":0.88509,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2016-04-29T00:00:00Z","modified":"2026-10-24T10:31:02Z","fixes":[{"ecosystem":"Debian:12","package":"libksba","fixed_in":["1.3.3-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libksba","fixed_in":["1.3.3-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libksba","fixed_in":["1.3.3-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:14.04:LTS","package":"libksba","fixed_in":["1.3.0-3ubuntu0.14.04.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libksba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.3-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libksba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.3-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libksba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.3-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"libksba","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"]},{"source":"osv","ecosystem":"Ubuntu:14.04:LTS","package":"libksba","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"],"bundled":6},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libksba","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.3-1ubuntu0.16.04.1"}]}],"versions":["1.3.3-1"],"bundled":6}],"products":[{"vendor":"canonical","product":"ubuntu_linux"},{"vendor":"gnupg","product":"libksba"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2016/05/10/3","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://www.ubuntu.com/usn/USN-2982-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2016/04/29/5","tags":["mailing-list","x_refsource_MLIST","x_transferred","web","report"]},{"url":"http://www.openwall.com/lists/oss-security/2016/04/29/8","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=243d12fdec66a4360fbb3e307a046b39b5b4ffc3","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/201604-04","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-4356"},{"url":"http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git;a=commit;h=243d12fdec66a4360fbb3e307a046b39b5b4ffc3"},{"url":"https://github.com/advisories/GHSA-mhm6-qhc6-f9f7"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2016-4356","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2016-4356","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-4356","tags":["report"]},{"url":"http://www.openwall.com/lists/oss-security/2015/04/13/5","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-2982-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2016-4356","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4353","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4354","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4355","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4574","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2016-4579","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2016-4356","description":"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.","status":"published","published":"2016-06-13T19:00:00Z","modified":"2024-08-06T00:25:14.5Z","updated_at":"2026-11-02T14:33:34.815789Z"}],"euvd":[{"id":"EUVD-2016-5356","description":"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.","status":"published","published":"2016-06-13T19:00:00Z","modified":"2024-08-06T00:25:14Z","updated_at":"2026-11-03T02:22:46.750795Z"}],"ghsa":[{"id":"GHSA-mhm6-qhc6-f9f7","title":"The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote...","description":"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.","status":"published","published":"2022-05-13T01:30:25Z","modified":"2025-04-12T13:02:05Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:01:28.050499Z"}],"nvd":[{"id":"CVE-2016-4356","description":"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.","status":"published","published":"2016-06-13T19:59:06.99Z","modified":"2026-06-17T00:47:24.43Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:03:26.642445Z"}],"osv":[{"id":"BELL-CVE-2016-4356","title":"CVE-2016-4356 does not affect BellSoft software","status":"withdrawn","published":"2016-06-13T19:59:00Z","modified":"2026-01-26T09:46:06.21007Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:14.137943Z"},{"id":"CVE-2016-4356","description":"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.","status":"published","published":"2016-06-13T19:59:06.99Z","modified":"2026-10-24T10:31:02.859835104Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:02.454775Z"},{"id":"DEBIAN-CVE-2016-4356","description":"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.","status":"published","published":"2016-06-13T19:59:06.99Z","modified":"2026-09-22T07:02:04.695203205Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:27.627285Z"},{"id":"UBUNTU-CVE-2016-4356","description":"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.","status":"published","published":"2016-04-29T00:00:00Z","modified":"2026-04-22T10:43:52.777143Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:12.261906Z"},{"id":"USN-2982-1","title":"libksba vulnerabilities","description":"Hanno Böck discovered that Libksba incorrectly handled decoding certain BER\ndata. An attacker could use this issue to cause Libksba to crash, resulting\nin a denial of service. This issue only applied to Ubuntu 12.04 LTS and\nUbuntu 14.04 LTS. (CVE-2016-4353)\n\nHanno Böck discovered that Libksba incorrectly handled decoding certain BER\ndata. An attacker could use this issue to cause Libksba to crash, resulting\nin a denial of service, or possibly execute arbitrary code. This issue only\napplied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4354,\nCVE-2016-4355)\n\nHanno Böck discovered that Libksba incorrectly handled incorrect utf-8\nstrings when decoding certain DN data. An attacker could use this issue to\ncause Libksba to crash, resulting in a denial of service, or possibly\nexecute arbitrary code. This issue only applied to Ubuntu 12.04 LTS and\nUbuntu 14.04 LTS. (CVE-2016-4356)\n\nPascal Cuoq discovered that Libksba incorrectly handled incorrect utf-8\nstrings when decoding certain DN data. An attacker could use this issue to\ncause Libksba to crash, resulting in a denial of service, or possibly\nexecute arbitrary code. (CVE-2016-4574)\n\nPascal Cuoq discovered that Libksba incorrectly handled decoding certain\ndata. An attacker could use this issue to cause Libksba to crash, resulting\nin a denial of service. (CVE-2016-4579)\n","status":"published","published":"2016-05-17T15:34:41Z","modified":"2026-04-22T09:24:03.995751Z","updated_at":"2026-11-02T16:58:10.303275Z"}]}}