VulnerabilityModified
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.
HIGH 8.1EPSS 3.10%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.10% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-522
- Affected
- samba/samba · canonical/ubuntu linux · redhat/enterprise linux desktop · redhat/enterprise linux server · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
References
- http://www.securityfocus.com/bid/105084Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2612Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2613Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3056Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1139Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202003-52Third 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.htmlThird Party Advisory
- http://www.securityfocus.com/bid/105084Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:2612Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2613Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3056Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1139Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202003-52Third 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.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.