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CVE-2018-16857

Published: 27 November 2018

Samba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of passwords) in a window of more than 3 minutes may not watch for bad passwords at all. The primary risk from this issue is with regards to domains that have been upgraded from Samba 4.8 and earlier. In these cases the manual testing done to confirm an organisation's password policies apply as expected may not have been re-done after the upgrade.

Notes

AuthorNote
mdeslaur
4.9.x only

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
upstream
Released (4.9.3)
trusty Not vulnerable

xenial Not vulnerable

bionic Not vulnerable

cosmic Not vulnerable

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:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N