CVE-2020-7046

Published: Feb 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

lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.

Affected (3)

Products: Dovecot: Dovecot · Fedoraproject: Fedora

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Dovecot Dovecot	From 2.3.9 to 2.3.9.3

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 30
Fedoraproject Fedora	Version 31

Related CWEs

CWE-835

Loop with Unreachable Exit Condition ('Infinite Loop')

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

References (10)

http://www.openwall.com/lists/oss-security/2020/02/12/1

Source: cve@mitre.org

Mailing ListThird Party Advisory

https://dovecot.org/pipermail/dovecot-news/2020-February/000431.html

Source: cve@mitre.org

Mailing ListVendor Advisory

https://dovecot.org/security

Source: cve@mitre.org

Vendor Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/

Source: cve@mitre.org

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/

Source: cve@mitre.org

http://www.openwall.com/lists/oss-security/2020/02/12/1