Improper input validation in Samba
CVE-2018-1139
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
- Samba
- The Samba Team — versions before 4.7.9, before 4.8.4
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2018:2613 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3738-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:2612 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/105084 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2018:3056 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20180814-0001/ (Third Party Advisory)
- www.samba.org/samba/security/CVE-2018-1139.html (Third Party Advisory)
- security.gentoo.org/glsa/202003-52 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-1139?
- CVE-2018-1139 is a high-severity vulnerability in Samba, classified under Improper Input Validation. CVSS score: 8.1/10. Published 2018-08-22.
- How severe is CVE-2018-1139?
- High severity. CVSS v3 base score is 8.1 out of 10.