high
7.5
CWE
125
Advisory Published
Updated

CVE-2020-12673

First published: Wed Aug 12 2020(Updated: )

In Dovecot before 2.3.11.3, sending a specially formatted NTLM request will crash the auth service because of an out-of-bounds read.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
<2.3.11.3
=9.0
=10.0
=14.04
=16.04
=18.04
=20.04
=31
=32
=33
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
1:2.3.4.1-5+deb10u6
1:2.3.4.1-5+deb10u7
1:2.3.13+dfsg1-2+deb11u1
1:2.3.19.1+dfsg1-2.1
1:2.3.21+dfsg1-2
ubuntu/dovecot<1:2.2.33.2-1ubuntu4.6
1:2.2.33.2-1ubuntu4.6
ubuntu/dovecot<1:2.3.7.2-1ubuntu3.2
1:2.3.7.2-1ubuntu3.2
ubuntu/dovecot<1:2.2.9-1ubuntu2.6+
1:2.2.9-1ubuntu2.6+
ubuntu/dovecot<2.3.11
2.3.11
ubuntu/dovecot<1:2.2.22-1ubuntu2.13
1:2.2.22-1ubuntu2.13

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Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the vulnerability ID for this Dovecot vulnerability?

    The vulnerability ID for this Dovecot vulnerability is CVE-2020-12673.

  • What is the severity level of CVE-2020-12673?

    The severity level of CVE-2020-12673 is high.

  • What is the description of CVE-2020-12673?

    CVE-2020-12673 is a vulnerability in Dovecot before 2.3.11.3 that allows an attacker to crash the auth service with a specially formatted NTLM request due to an out-of-bounds read.

  • Which software versions are affected by CVE-2020-12673?

    The affected software versions of CVE-2020-12673 include Dovecot 1:2.2.33.2-1ubuntu4.6, 1:2.3.7.2-1ubuntu3.2, 1:2.2.9-1ubuntu2.6+, 2.3.11, and 1:2.2.22-1ubuntu2.13.

  • Where can I find more information about CVE-2020-12673?

    You can find more information about CVE-2020-12673 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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