CVE-2021-42550

Publication date 16 December 2021

Last updated 3 July 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.6 · Medium

Score breakdown

In logback version 1.2.7 and prior versions, an attacker with the required privileges to edit configurations files could craft a malicious configuration allowing to execute arbitrary code loaded from LDAP servers.

Status

Package Ubuntu Release Status
logback 25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic Ignored end of life, was needs-triage
23.04 lunar Ignored end of life, was needs-triage
22.10 kinetic Ignored end of life, was needs-triage
22.04 LTS jammy
Not affected
21.10 impish Ignored end of life
21.04 hirsute Ignored end of life
20.04 LTS focal
Fixed 1:1.2.3-5ubuntu0.1~esm1
18.04 LTS bionic
Fixed 1:1.2.3-2ubuntu1~18.04.1+esm1
16.04 LTS xenial
Fixed 1:1.1.3-2ubuntu0.1~esm1
14.04 LTS trusty Ignored end of standard support

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Severity score breakdown

Parameter Value
Base score 6.6 · Medium
Attack vector Network
Attack complexity High
Privileges required High
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H