Improper Authentication in Samba - CVE-2018-16860
Published: May 14, 2019
Vulnerability identifier: #VU18438
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2018-16860
CWE-ID: CWE-287
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: Samba
Affected software:
Samba
Samba
Detailed vulnerability description
The vulnerability allows a remote authenticated user to compromise vulnerable domain.
The vulnerability exists due to an error within the process of obtaining kerberos ticket for a service from the Kerberos Key Distribution Center (KDC) that involves S4U2Self and S4U2Proxy extensions. A remote authenticated user can impersonate another service on the network and obtain elevated privileges within the domain.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable Active Directory implementation.
How to mitigate CVE-2018-16860
Install updates from vendor's website.