CVE-2020-12674

Published: Aug 12, 2020Modified: Jun 17, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

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 (10)

Products: Dovecot: Dovecot · Debian: Debian Linux · Canonical: Ubuntu Linux · +1 more

Show all products

Dovecot: Dovecot · Debian: Debian Linux · Canonical: Ubuntu Linux · Fedoraproject: Fedora

1 product

1 product

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Dovecot Dovecot	Before 2.3.11.3

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 10.0
Debian Debian Linux	Version 9.0

Configuration C

4 vulnerable

Vulnerable Software	Affected Versions
Canonical Ubuntu Linux	Version 14.04
Canonical Ubuntu Linux	Version 16.04
Canonical Ubuntu Linux	Version 18.04
Canonical Ubuntu Linux	Version 20.04

Configuration D

3 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 31
Fedoraproject Fedora	Version 32
Fedoraproject Fedora	Version 33

Related CWEs

CWE-125

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (24)

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00048.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00059.html

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://dovecot.org/security

Source: cve@mitre.org

Vendor Advisory

https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html

Source: cve@mitre.org

Third Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4AAX2MJEULPVSRZOBX3PNPFSYP4FM4TT/

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EYZU6CHA3VMYYAUCMHSCCQKJEVEIKPQ2/

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XKKAL3OMG76ZZ7CIEMQP2K6KCTD2RAKE/

Source: cve@mitre.org

https://security.gentoo.org/glsa/202009-02

Source: cve@mitre.org

Third Party Advisory

https://usn.ubuntu.com/4456-1/

Source: cve@mitre.org

Third Party Advisory

https://usn.ubuntu.com/4456-2/

Source: cve@mitre.org

Third Party Advisory

https://www.debian.org/security/2020/dsa-4745

Source: cve@mitre.org

Third Party Advisory

https://www.openwall.com/lists/oss-security/2020/08/12/3

Source: cve@mitre.org

ExploitMailing ListThird Party Advisory

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00048.html