High severity7.5NVD Advisory· Published Aug 12, 2020· Updated Jun 17, 2026
CVE-2020-12673
CVE-2020-12673
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
40cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:dovecot:dovecot:*:*:*:*:*:*:*:*range: <2.3.11.3
- (no CPE)range: <2.3.11.3
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- Dovecot/Dovecotdescription
- osv-coords28 versionspkg:rpm/opensuse/dovecot23&distro=openSUSE%20Leap%2015.1pkg:rpm/opensuse/dovecot23&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/dovecot23&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/dovecot24&distro=openSUSE%20Tumbleweedpkg:rpm/suse/dovecot22&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/dovecot22&distro=SUSE%20Enterprise%20Storage%205pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/dovecot22&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP5pkg:rpm/suse/dovecot22&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/dovecot22&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/dovecot22&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/dovecot22&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/dovecot22&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/dovecot23&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/dovecot23&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/dovecot23&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP1pkg:rpm/suse/dovecot23&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/dovecot23&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/dovecot23&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015
< 2.3.10-lp151.2.12.1+ 27 more
- (no CPE)range: < 2.3.10-lp151.2.12.1
- (no CPE)range: < 2.3.10-lp152.2.3.1
- (no CPE)range: < 2.3.16-1.6
- (no CPE)range: < 2.4.0-1.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.2.31-19.22.1
- (no CPE)range: < 2.3.10-4.27.1
- (no CPE)range: < 2.3.10-4.27.1
- (no CPE)range: < 2.3.10-16.1
- (no CPE)range: < 2.3.11.3-17.5.1
- (no CPE)range: < 2.3.10-4.27.1
- (no CPE)range: < 2.3.10-4.27.1
Patches
Vulnerability mechanics
References
12- www.openwall.com/lists/oss-security/2020/08/12/2nvdExploitMailing ListThird Party Advisory
- dovecot.org/securitynvdVendor Advisory
- lists.debian.org/debian-lts-announce/2020/08/msg00024.htmlnvdThird Party Advisory
- security.gentoo.org/glsa/202009-02nvdThird Party Advisory
- usn.ubuntu.com/4456-1/nvdThird Party Advisory
- usn.ubuntu.com/4456-2/nvdThird Party Advisory
- www.debian.org/security/2020/dsa-4745nvdThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00048.htmlnvdBroken Link
- lists.opensuse.org/opensuse-security-announce/2020-08/msg00059.htmlnvdBroken Link
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/nvd
News mentions
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