CVE-2018-1139

HIGH

Samba <4.7.9, 4.8.4 - Info Disclosure

Title source: llm

Description

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.

References (9)

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/105084

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2018:2612

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2018:2613

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2018:3056

[Issue Tracking, Third Party Advisory] https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1139

[Third Party Advisory] https://security.gentoo.org/glsa/202003-52

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20180814-0001/

[Third Party Advisory] https://usn.ubuntu.com/3738-1/

[Third Party Advisory] https://www.samba.org/samba/security/CVE-2018-1139.html

Scores

CVSS v3 8.1

EPSS 0.0162

EPSS Percentile 81.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-522 CWE-20

Status published

Affected Products (7)

samba/samba < 4.7.9

canonical/ubuntu_linux

canonical/ubuntu_linux

canonical/ubuntu_linux

redhat/enterprise_linux_desktop

redhat/enterprise_linux_server

redhat/enterprise_linux_workstation

Timeline

Published Aug 22, 2018

Tracked Since Feb 18, 2026