Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

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

Get expanded security coverage with Ubuntu Pro

Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use.

Get Ubuntu Pro

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