{"id":"CVE-2020-7043","aliases":["DEBIAN-CVE-2020-7043","EUVD-2020-28177","GHSA-4pqj-5gg5-44jh","UBUNTU-CVE-2020-7043","openSUSE-SU-2020:0301-1","openSUSE-SU-2020:0305-1","openSUSE-SU-2024:11118-1"],"status":"published","title":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c...","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\\0' characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02759,"percentile":0.86358,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295"],"published":"2020-02-27T17:30:51Z","modified":"2026-10-26T12:00:26Z","fixes":[{"ecosystem":"Debian:12","package":"openfortivpn","fixed_in":["1.12.0-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openfortivpn","fixed_in":["1.12.0-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openfortivpn","fixed_in":["1.12.0-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"openfortivpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.0-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"openfortivpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.0-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"openfortivpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.0-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"openfortivpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0-1","1.6.0-1build1"]},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"openfortivpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.0-lp151.2.5.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Package Hub 15 SP1","package":"openfortivpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.12.0-bp151.3.3.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"openfortivpn","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.1-1.1"}]}],"bundled":3}],"products":[{"vendor":"fedoraproject","product":"fedora"},{"vendor":"openfortivpn_project","product":"openfortivpn"},{"vendor":"opensuse","product":"backports_sle"},{"vendor":"opensuse","product":"leap"}],"references":[{"url":"https://github.com/adrienverge/openfortivpn/issues/536","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00009.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00011.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SRVVNXCNTNMPCIAZIVR4FAGYCSU53FNA/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FF6HYIBREQGATRM5COF57MRQWKOKCWZ3/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://github.com/adrienverge/openfortivpn/commit/6328a070ddaab16faaf008cb9a8a62439c30f2a8","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-7043"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FF6HYIBREQGATRM5COF57MRQWKOKCWZ3"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SRVVNXCNTNMPCIAZIVR4FAGYCSU53FNA"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FF6HYIBREQGATRM5COF57MRQWKOKCWZ3"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SRVVNXCNTNMPCIAZIVR4FAGYCSU53FNA"},{"url":"https://github.com/advisories/GHSA-4pqj-5gg5-44jh"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-7043","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-7043","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-7043","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/RZEDRWLMRKGVGRSXJMFL4ABTGHIF6GLD/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1165299","tags":["report"]},{"url":"https://bugzilla.suse.com/1165300","tags":["report"]},{"url":"https://bugzilla.suse.com/1165301","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2020-7041","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-7042","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-7043","tags":["web"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/LXVMOLZGPWSU3PQQHJUNYFPGEJQQUENK/","tags":["advisory"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2020-7043","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\\0' characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","status":"published","published":"2020-02-27T17:30:51Z","modified":"2024-08-04T09:18:03.013Z","updated_at":"2026-11-02T14:35:58.787905Z"}],"euvd":[{"id":"EUVD-2020-28177","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\\0' characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","status":"published","published":"2020-02-27T17:30:51Z","modified":"2024-08-04T09:18:03Z","updated_at":"2026-11-03T03:08:01.029528Z"}],"ghsa":[{"id":"GHSA-4pqj-5gg5-44jh","title":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c...","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider \u0026#39;\\0\u0026#39; characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","status":"published","published":"2022-05-24T17:09:52Z","modified":"2024-04-04T02:48:27Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:56:12.154453Z"}],"nvd":[{"id":"CVE-2020-7043","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\\0' characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","status":"published","published":"2020-02-27T18:15:11.623Z","modified":"2026-06-17T03:24:11.123Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary"},{"version":"2.0","score":6.4,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:05:54.796125Z"}],"osv":[{"id":"CVE-2020-7043","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\\0' characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","status":"published","published":"2020-02-27T18:15:11.623Z","modified":"2026-11-10T07:04:20.939176706Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-09T10:53:57.550641Z"},{"id":"DEBIAN-CVE-2020-7043","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\\0' characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","status":"published","published":"2020-02-27T18:15:11.623Z","modified":"2026-10-26T12:00:26.505920187Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:45:34.311861Z"},{"id":"UBUNTU-CVE-2020-7043","description":"An issue was discovered in openfortivpn 1.11.0 when used with OpenSSL before 1.0.2. tunnel.c mishandles certificate validation because hostname comparisons do not consider '\\0' characters, as demonstrated by a good.example.com\\x00evil.example.com attack.","status":"published","published":"2020-02-27T18:15:00Z","modified":"2025-10-24T04:48:18Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:54:25.728622Z"},{"id":"openSUSE-SU-2020:0301-1","title":"Security update for openfortivpn","description":"This update for openfortivpn to version 1.12.0 fixes the following issues:\n\n- CVE-2020-7043: Fixed a TLS Certificate CommonName NULL Byte Vulnerability (boo#1165301).\n- CVE-2020-7042: Fixed use of uninitialized memory in X509_check_host (boo#1165300).\n- CVE-2020-7041: Fixed incorrect use of X509_check_host (boo#1165299).\n","status":"published","published":"2020-03-04T19:15:28Z","modified":"2026-02-04T03:47:19.709365Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"id":"openSUSE-SU-2020:0305-1","title":"Security update for openfortivpn","description":"This update for openfortivpn to version 1.12.0 fixes the following issues:\n\n- CVE-2020-7043: Fixed a TLS Certificate CommonName NULL Byte Vulnerability (boo#1165301).\n- CVE-2020-7042: Fixed use of uninitialized memory in X509_check_host (boo#1165300).\n- CVE-2020-7041: Fixed incorrect use of X509_check_host (boo#1165299).\n\nThis update was imported from the openSUSE:Leap:15.1:Update update project.","status":"published","published":"2020-03-05T16:18:07Z","modified":"2026-02-04T03:57:51.404263Z","updated_at":"2026-11-02T16:58:31.152112Z"},{"id":"openSUSE-SU-2024:11118-1","title":"openfortivpn-1.17.1-1.1 on GA media","description":"These are all security issues fixed in the openfortivpn-1.17.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2025-05-07T18:12:14.69096Z","updated_at":"2026-11-02T16:58:34.894275Z"}]}}