CVE-2020-12100
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Dovecot
PublishedAug 12, 2020
First seenAug 12, 2020
How to fix
Update
- dovecot dovecot2.3.11.3 or later
Vendor advisories
- debian.org/security/2020/dsa-4745
- usn.ubuntu.com/4456-1/
- usn.ubuntu.com/4456-2/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/
- security.gentoo.org/glsa/202009-02
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| dovecot dovecot | v < 2.3.11.3 | 2.3.11.3 |
| debian debian_linux | 9.0, 10.0 | — |
| fedoraproject fedora | 31, 32, 33 | — |
| canonical ubuntu_linux | 14.04, 16.04, 18.04, 20.04 | — |
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