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CVE-2018-1139

Published: 14 August 2018

A flaw was found in the way samba before 4.7.9 and 4.8.4 allowed the use of weak NTLMv1 authentication even when NTLMv1 was explicitly disabled. A man-in-the-middle attacker could use this flaw to read the credential and other details passed between the samba server and client.

Notes

AuthorNote
mdeslaur
4.7.0 to 4.8.3 only

Priority

Medium

Cvss 3 Severity Score

8.1

Score breakdown

Status

Package Release Status
samba
Launchpad, Ubuntu, Debian
bionic
Released (2:4.7.6+dfsg~ubuntu-0ubuntu2.2)
trusty Not vulnerable
(2:4.3.11+dfsg-0ubuntu0.14.04.14)
upstream
Released (4.7.9,4.8.4)
xenial Not vulnerable
(2:4.3.11+dfsg-0ubuntu0.16.04.13)

Severity score breakdown

Parameter Value
Base score 8.1
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H