[ GLSA 202009-02 ] Dovecot

[GLSA]

Gentoo Linux Security Advisory

Title: Dovecot: Multiple vulnerabilities (GLSA 202009-02)
Severity: normal
Exploitable: remote
Date: 2020-09-06
Bug(s): #736617
ID: 202009-02

Synopsis

Multiple vulnerabilities have been found in Dovecot, the worst of
which could allow remote attackers to cause a Denial of Service condition.


Background

Dovecot is an open source IMAP and POP3 email server.

Affected Packages

Package: net-mail/dovecot
Vulnerable: < 2.3.11.3
Unaffected: >= 2.3.11.3
Architectures: All supported architectures


Description

It was discovered that Dovecot incorrectly handled deeply nested MIME
parts, incorrectly handled memory when using NTLM, and incorrectly
handled zero-length messages.


Impact

A remote attacker could send a specially crafted mail or send specially
crafted authentication requests possibly resulting in a Denial of Service
condition.


Workaround

There is no known workaround at this time.

Resolution

All Dovecot users should upgrade to the latest version: