Medium severity · published Aug 22, 2018
CVE-2018-1140
A missing input sanitization flaw was found in the implementation of LDP database used for the LDAP server
6.5
CVSS
10.8%
EPSS
No
On KEV
Description
A missing input sanitization flaw was found in the implementation of LDP database used for the LDAP server. An attacker could use this flaw to cause a denial of service against a samba server, used as a Active Directory Domain Controller. All versions of Samba from 4.8.0 onwards are vulnerable
CVSS vector
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)10.8% · higher than 96% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
samba · The Samba Team
4.8.0 and newer · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-1140
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-1140
Third Party Advisory
http://www.securityfocus.com/bid/105082
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1140
Issue Tracking
https://bugzilla.samba.org/show_bug.cgi?id=13374
security.gentoo.org
https://security.gentoo.org/glsa/202003-52
Third Party Advisory
https://security.netapp.com/advisory/ntap-20180814-0001/
Patch
https://www.samba.org/samba/security/CVE-2018-1140.html
More from samba
8.1
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