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CVE-2020-28023

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 allows Out-of-bounds Read. smtp_setup_msg may disclose sensitive information from process memory to an unauthenticated SMTP client.

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 code not present

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 High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

Other references