High severity · published Aug 22, 2018
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
8.1
CVSS
3.1%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.1% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
samba · The Samba Team
before 4.7.9; before 4.8.4 · source: vendor, NVD
EL
Enterprise Linux Desktop · Redhat
7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
7.0 · source: NVD
EL
Enterprise Linux Workstation · Redhat
7.0 · source: NVD
UL
Ubuntu Linux · Canonical
14.04; 16.04; 18.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1139
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-1139
Third Party Advisory
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
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1139
Third Party Advisory
https://security.gentoo.org/glsa/202003-52
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6.5
CVE-2018-1140
A missing input sanitization flaw was found in the implementation of LDP database used for the LDAP server