CVE-2020-10958

MEDIUM

Dovecot < 2.3.10.1 - Unauthenticated Use-After-Free via SMTP/LMTP Newline Handling

Title source: llm

Description

In Dovecot before 2.3.10.1, a crafted SMTP/LMTP message triggers an unauthenticated use-after-free bug in submission-login, submission, or lmtp, and can lead to a crash under circumstances involving many newlines after a command.

References (10)

Core 10

Core References

Vendor Advisory x_refsource_misc

https://dovecot.org/security

Mailing List, Third Party Advisory x_refsource_confirm

https://www.openwall.com/lists/oss-security/2020/05/18/1

Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2020/05/18/1

Vendor Advisory vendor-advisory x_refsource_ubuntu

https://usn.ubuntu.com/4361-1/

Exploit, Third Party Advisory mailing-list x_refsource_fulldisc

http://seclists.org/fulldisclosure/2020/May/37

Exploit, Third Party Advisory x_refsource_misc

http://packetstormsecurity.com/files/157771/Open-Xchange-Dovecot-2.3.10-Null-Pointer-Dereference-Denial-Of-Service.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VVUWHUUAFPC6XGIXYFIPTNBXLHPNM4W6/

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00059.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TTZN2VW55ZC2AQBGBJMLRJSZIKSB2NS6/

Third Party Advisory vendor-advisory x_refsource_debian

https://www.debian.org/security/2020/dsa-4690

Scores

CVSS v3 5.3

EPSS 0.0612

EPSS Percentile 92.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Details

CWE

CWE-416

Status published

Products (1)

dovecot/dovecot < 2.3.10.1

Published May 18, 2020

Tracked Since Feb 18, 2026