{"id":"CVE-2020-7043","details":"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.","modified":"2026-07-08T23:35:34.098479Z","published":"2020-02-27T18:15:11.623Z","related":["openSUSE-SU-2020:0301-1","openSUSE-SU-2020:0305-1","openSUSE-SU-2024:11118-1"],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*"],"extracted_events":[{"introduced":"30"},{"last_affected":"30"},{"introduced":"31"},{"last_affected":"31"},{"introduced":"32"},{"last_affected":"32"}],"source":"CPE_STRING","vendor_product":"fedoraproject:fedora"},{"vendor_product":"opensuse:backports_sle","cpes":["cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*"],"extracted_events":[{"introduced":"15.0-sp1"},{"last_affected":"15.0-sp1"}],"source":"CPE_STRING"},{"extracted_events":[{"introduced":"15.1"},{"last_affected":"15.1"}],"source":"CPE_STRING","vendor_product":"opensuse:leap","cpes":["cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"]}]},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CKNKSGBVYGRRVRLFEFBEKUEJYJR5LWOF/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FF6HYIBREQGATRM5COF57MRQWKOKCWZ3/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SRVVNXCNTNMPCIAZIVR4FAGYCSU53FNA/"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00009.html"},{"type":"ADVISORY","url":"http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00011.html"},{"type":"REPORT","url":"https://github.com/adrienverge/openfortivpn/issues/536"},{"type":"FIX","url":"https://github.com/adrienverge/openfortivpn/commit/6328a070ddaab16faaf008cb9a8a62439c30f2a8"},{"type":"FIX","url":"https://github.com/adrienverge/openfortivpn/commit/cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/adrienverge/openfortivpn","events":[{"introduced":"0"},{"fixed":"cd9368c6a1b4ef91d77bb3fdbe2e5bc34aa6f4c4"},{"fixed":"6328a070ddaab16faaf008cb9a8a62439c30f2a8"}],"database_specific":{"cpe":"cpe:2.3:a:openfortivpn_project:openfortivpn:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.12.0"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v1.11.0","v1.10.0","v1.9.0","v1.8.1","v1.8.0","v1.7.1","v1.7.0","v1.6.0","v1.5.0","v1.4.0","v1.3.1","v1.3.0","v1.2.0","v1.1.4","v1.1.3","v1.1.2","v1.1.1","v1.1.0","v1.0.1","v1.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-7043.json","vanir_signatures_modified":"2026-07-08T23:35:34Z","vanir_signatures":[{"id":"CVE-2020-7043-2f760f54","signature_type":"Function","signature_version":"v1","source":"https://github.com/adrienverge/openfortivpn/commit/6328a070ddaab16faaf008cb9a8a62439c30f2a8","target":{"file":"src/tunnel.c","function":"ssl_verify_cert"},"deprecated":false,"digest":{"function_hash":"125432945444897325704174321387259565829","length":2429}},{"deprecated":false,"digest":{"line_hashes":["326536668639958100052841729794042126996","123601388663251602674058961315617262532","298499906374837506832731988873827737561","333538535266810693348442609398214357092","222499057199839917237616048434638310995","158021963753876568126672681529555774435","3117077068216323258710621602857852384","210886845709506199277846659849797683834","247627447578623611675946358640487877531","229416393064689430651692213890800657889","78461889246657476217910916720647705158","8031173947055631212742603957353263086","19935018114004311826440147295255170225"],"threshold":0.9},"id":"CVE-2020-7043-63a1b135","signature_type":"Line","signature_version":"v1","source":"https://github.com/adrienverge/openfortivpn/commit/6328a070ddaab16faaf008cb9a8a62439c30f2a8","target":{"file":"src/tunnel.c"}}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}