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CVE-2021-20251

Published: 27 October 2022

A flaw was found in samba. A race condition in the password lockout code may lead to the risk of brute force attacks being successful if special conditions are met.

Notes

AuthorNote
mdeslaur
Samba team considers this issue not serious enough for an
advisory, and did not publish updates for releases earlier than
4.16

Priority

Low

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
bionic Needed

focal Needed

jammy Needed

trusty Needs triage

upstream
Released (4.17.1,4.16.8)
kinetic
Released (2:4.16.8+dfsg-0ubuntu1)
lunar Not vulnerable
(2:4.17.3+dfsg-3ubuntu1)
xenial Needs triage

mantic Not vulnerable
(2:4.17.3+dfsg-3ubuntu1)

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N