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-2020-28019

Publication date 4 May 2021

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.

Read the notes from the security team

Status

Package Ubuntu Release Status
exim4 22.04 LTS jammy
Fixed 4.94-15ubuntu1.2
21.10 impish
Fixed 4.94-15ubuntu1.2
21.04 hirsute
Fixed 4.94-15ubuntu1.2
20.10 groovy
Fixed 4.94-7ubuntu1.2
20.04 LTS focal
Fixed 4.93-13ubuntu1.5
18.04 LTS bionic
Fixed 4.90.1-1ubuntu1.8
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

Notes

leosilva

trusty/xenial ESM not affected. vulnerability was introduced by: https://git.exim.org/exim.git/patch/7e3ce68e68ab9b8906a637d352993abf361554e2

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)

Other references