{"id":"CVE-2020-12673","details":"In Dovecot before 2.3.11.3, sending a specially formatted NTLM request will crash the auth service because of an out-of-bounds read.","modified":"2026-04-09T06:48:58.879083Z","published":"2020-08-12T16:15:11.823Z","related":["MGASA-2020-0330","SUSE-SU-2020:2266-1","SUSE-SU-2020:2267-1","SUSE-SU-2020:2274-1","SUSE-SU-2021:0028-1","openSUSE-SU-2020:1241-1","openSUSE-SU-2020:1262-1","openSUSE-SU-2024:10726-1","openSUSE-SU-2025:14715-1"],"references":[{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00048.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00059.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4456-1/"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/4456-2/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2020/dsa-4745"},{"type":"ADVISORY","url":"https://dovecot.org/security"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202009-02"},{"type":"EVIDENCE","url":"https://www.openwall.com/lists/oss-security/2020/08/12/2"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/dovecot/core","events":[{"introduced":"0"},{"fixed":"502c39af9375c2739ce01f93afd0d01c836613fd"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"2.3.11.3"}]}}],"versions":["1.1.alpha1","1.1.alpha2","1.1.alpha4","1.1.alpha5","1.1.alpha6","1.1.beta1","1.1.beta10","1.1.beta11","1.1.beta12","1.1.beta13","1.1.beta14","1.1.beta16","1.1.beta2","1.1.beta3","1.1.beta4","1.1.beta5","1.1.beta6","1.1.beta8","1.1.beta9","1.1.rc1","1.1.rc2","1.1.rc3","1.2.alpha1","1.2.alpha2","1.2.alpha3","1.2.alpha4","1.2.alpha5","1.2.beta1","1.2.beta2","1.2.beta3","1.2.beta4","1.2.rc1","2.0.0","2.0.1","2.0.2","2.0.3","2.0.4","2.0.5","2.0.6","2.0.7","2.0.8","2.0.alpha1","2.0.alpha2","2.0.alpha3","2.0.beta1","2.0.beta2","2.0.beta3","2.0.beta4","2.0.beta5","2.0.beta6","2.0.rc1","2.0.rc2","2.0.rc3","2.0.rc4","2.0.rc5","2.0.rc6","2.1.alpha1","2.1.alpha2","2.1.beta1","2.1.rc1","2.1.rc2","2.1.rc3","2.1.rc4","2.1.rc5","2.1.rc6","2.2.0","2.2.1","2.2.10","2.2.11","2.2.12","2.2.13","2.2.13.rc1","2.2.14","2.2.14.rc1","2.2.15","2.2.16","2.2.16.rc1","2.2.17","2.2.17.rc1","2.2.17.rc2","2.2.18","2.2.19","2.2.19.rc1","2.2.19.rc2","2.2.2","2.2.20","2.2.20.rc1","2.2.3","2.2.4","2.2.5","2.2.6","2.2.7","2.2.8","2.2.9","2.2.alpha1","2.2.beta1","2.2.beta2","2.2.rc1","2.2.rc2","2.2.rc3","2.2.rc4","2.2.rc5","2.2.rc6","2.2.rc7"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-12673.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]},{"events":[{"introduced":"0"},{"last_affected":"14.04"}]},{"events":[{"introduced":"0"},{"last_affected":"16.04"}]},{"events":[{"introduced":"0"},{"last_affected":"18.04"}]},{"events":[{"introduced":"0"},{"last_affected":"20.04"}]},{"events":[{"introduced":"0"},{"last_affected":"31"}]},{"events":[{"introduced":"0"},{"last_affected":"32"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}