VulnerabilityModified
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.
HIGH 7.5EPSS 5.21%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 5.21% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-674
- Affected
- dovecot/dovecot · debian/debian linux · fedoraproject/fedora · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.