CVE-2020-12674: High severity Dovecot dovecot vulnerability

Published Aug 12, 2020
·
Updated

In Dovecot before 2.3.11.3, sending a specially formatted RPA request will crash the auth service because a length of zero is mishandled.

Affected Software

11 affected componentsFixes available
Dovecot dovecot<2.3.11.3
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
Fedoraproject Fedora=31
Fedoraproject Fedora=32
Fedoraproject Fedora=33
debian/dovecot
1:2.3.13+dfsg1-2+deb11u11:2.3.13+dfsg1-2+deb11u21:2.3.19.1+dfsg1-2.1+deb12u11:2.4.1+dfsg1-6+deb13u21:2.4.1+dfsg1-6+deb13u11:2.4.2+dfsg1-3

Event History

Aug 12, 2020
CVE Published
via MITRE·03:20 PM
Data Sourced
via MITRE·03:20 PM
Description
Data Sourced
via NVD·04:15 PM
DescriptionSeverityWeaknessAffected Software
Feb 24, 2026
Data Sourced
via Ubuntu·06:51 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·06:51 PM
DescriptionAffected Software
Data Sourced
via Launchpad·06:52 PM
Description
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Frequently Asked Questions

1

What is CVE-2020-12674?

CVE-2020-12674 is a vulnerability in Dovecot versions prior to 2.3.11.3 that allows an attacker to crash the auth service by sending a specially formatted RPA request.

2

What is the severity of CVE-2020-12674?

CVE-2020-12674 has a severity score of 7.5 (high).

3

How does CVE-2020-12674 affect Dovecot?

CVE-2020-12674 affects Dovecot versions before 2.3.11.3.

4

How can I fix CVE-2020-12674?

To fix CVE-2020-12674, you should update Dovecot to version 2.3.11.3 or later.

5

Where can I find more information about CVE-2020-12674?

You can find more information about CVE-2020-12674 at the following references: http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00048.html, http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00059.html, and https://dovecot.org/security.

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