CVE-2020-12100

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.

• CWE-674

• http://seclists.org/fulldisclosure/2021/Jan/18Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/08/12/1Exploit, Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/01/04/3Mailing List, Third Party Advisory
• https://dovecot.org/securityVendor Advisory
• https://lists.debian.org/debian-lts-announce/2020/08/msg00024.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/
• https://security.gentoo.org/glsa/202009-02Third Party Advisory
• https://usn.ubuntu.com/4456-1/Third Party Advisory
• https://usn.ubuntu.com/4456-2/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4745Third Party Advisory
• http://seclists.org/fulldisclosure/2021/Jan/18Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2020/08/12/1Exploit, Mailing List, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/01/04/3Mailing List, Third Party Advisory
• https://dovecot.org/securityVendor Advisory
• https://lists.debian.org/debian-lts-announce/2020/08/msg00024.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/
• https://security.gentoo.org/glsa/202009-02Third Party Advisory
• https://usn.ubuntu.com/4456-1/Third Party Advisory
• https://usn.ubuntu.com/4456-2/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4745Third Party Advisory

Published

Aug 12, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-12080A Denial of Service vulnerability has been identified in Fle…7.5
• CVE-2020-12081An information disclosure vulnerability has been identified …7.5
• CVE-2020-12082A stored cross-site scripting issue impacts certain areas of…5.4
• CVE-2020-12083An elevated privileges issue related to Spring MVC calls imp…9.9
• CVE-2020-1209An elevation of privilege vulnerability exists in the way th…7.8
• CVE-2020-1210<p>A remote code execution vulnerability exists in Microsoft…9.9
• CVE-2020-12101The address-management feature in xt:Commerce 5.1 to 6.2.2 a…4.3
• CVE-2020-12102In Tiny File Manager 2.4.1, there is a Path Traversal vulner…7.7
• CVE-2020-12103In Tiny File Manager 2.4.1 there is a vulnerability in the a…7.7
• CVE-2020-12104The Import feature in the wp-advanced-search plugin 3.3.6 fo…8.8
• CVE-2020-12105OpenConnect through 8.08 mishandles negative return values f…5.9
• CVE-2020-12106The Web portal of the WiFi module of VPNCrypt M10 2.6.5 allo…9.8