High severity7.5NVD Advisory· Published Aug 12, 2020· Updated Jun 17, 2026
CVE-2020-12100
CVE-2020-12100
Description
In Dovecot before 2.3.11.3, uncontrolled recursion in submission, lmtp, and lda allows remote attackers to cause a denial of service (resource consumption) via a crafted e-mail message with deeply nested MIME parts.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
22cpe: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:*:*:*:esm:*:*:*
- 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-coords10 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/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
< 2.3.11.3-lp151.2.15.1+ 9 more
- (no CPE)range: < 2.3.11.3-lp151.2.15.1
- (no CPE)range: < 2.3.11.3-lp152.2.6.1
- (no CPE)range: < 2.3.16-1.6
- (no CPE)range: < 2.4.0-1.1
- (no CPE)range: < 2.3.11.3-4.32.1
- (no CPE)range: < 2.3.11.3-4.32.1
- (no CPE)range: < 2.3.11.3-21.1
- (no CPE)range: < 2.3.11.3-17.5.1
- (no CPE)range: < 2.3.11.3-4.32.1
- (no CPE)range: < 2.3.11.3-4.32.1
Patches
Vulnerability mechanics
References
12- www.openwall.com/lists/oss-security/2020/08/12/1nvdExploitMailing ListThird Party Advisory
- seclists.org/fulldisclosure/2021/Jan/18nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2021/01/04/3nvdMailing ListThird Party Advisory
- dovecot.org/securitynvdVendor Advisory
- lists.debian.org/debian-lts-announce/2020/08/msg00024.htmlnvdMailing ListThird 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.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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