CVE-2021-3670

Publication date 31 December 2021

Last updated 18 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

Description

MaxQueryDuration not honoured in Samba AD DC LDAP

Status

Package Ubuntu Release Status
ldb 25.10 questing Not in release
25.04 plucky Not in release
24.10 oracular Not in release
24.04 LTS noble Not in release
23.10 mantic Not in release
23.04 lunar Not in release
22.10 kinetic Not in release
22.04 LTS jammy
Not affected
21.10 impish Ignored end of life
20.04 LTS focal
Fixed 2:2.2.3-0ubuntu0.20.04.3
18.04 LTS bionic
Vulnerable
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty
Needs evaluation
samba 25.10 questing
Not affected
25.04 plucky
Not affected
24.10 oracular
Not affected
24.04 LTS noble
Not affected
23.10 mantic
Not affected
23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish Ignored end of life
20.04 LTS focal
Fixed 2:4.13.17~dfsg-0ubuntu1.20.04.1
18.04 LTS bionic
Vulnerable
16.04 LTS xenial
Needs evaluation
14.04 LTS trusty
Needs evaluation

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
ldb
samba

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references