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ALSA-2020:4763 — Moderate: dovecot security update

Affected: AlmaLinux:8: dovecot, AlmaLinux:8: dovecot-devel

Dovecot is an IMAP server for Linux and other UNIX-like systems, written primarily with security in mind. It also contains a small POP3 server, and supports e-mail in either the maildir or mbox format. The SQL drivers and authentication plug-ins are provided as subpackages.

Security Fix(es):

* dovecot: command followed by sufficient number of newlines leads to use-after-free (CVE-2020-10958)

* dovecot: sending mail with empty quoted localpart leads to DoS (CVE-2020-10967)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

cnvd-2020-30670

EUVD-2026-40279

fkie_cve-2020-10967

In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash the lmtp or submission process by sending mail with an empty localpart.

GHSA-qm25-rqq9-7jcr

In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash the lmtp or submission process by sending mail with an empty localpart.

gsd-2020-10967

openSUSE-SU-2020:0720-1 — Security update for dovecot23

Security update for dovecot23

SUSE-SU-2020:1379-1 — Security update for dovecot23

Security update for dovecot23

UBUNTU-CVE-2020-10967

Affected: Ubuntu:20.04:LTS: dovecot

In Dovecot before 2.3.10.1, remote unauthenticated attackers can crash the lmtp or submission process by sending mail with an empty localpart.

WID-SEC-W-2025-0236 — Dovecot: Mehrere Schwachstellen ermöglichen Denial of Service

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Dovecot ausnutzen, um einen Denial of Service Angriff durchzuführen und potentiell um beliebigen Code auszuführen.