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CVE-2020-12673

Publication date 12 August 2020

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
dovecot 20.04 LTS focal
Fixed 1:2.3.7.2-1ubuntu3.2
18.04 LTS bionic
Fixed 1:2.2.33.2-1ubuntu4.6
16.04 LTS xenial
Fixed 1:2.2.22-1ubuntu2.13
14.04 LTS trusty

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Notes

leosilva

marking precise as ignored since we won't fix it version in that release is quite old and the backports could possibly cause serious regressions.

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-4456-1
    • Dovecot vulnerabilities
    • 12 August 2020
    • USN-4456-2
    • Dovecot vulnerabilities
    • 17 August 2020

Other references