#VU293 Kerberos privilege escalation in Windows and Windows Server - CVE-2016-3237
Published: August 10, 2016 / Updated: September 14, 2018
Vulnerability identifier: #VU293
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2016-3237
CWE-ID: CWE-255
Exploitation vector: Adjecent network
Exploit availability:
Public exploit is available
Vulnerable software:
Windows
Windows Server
Windows
Windows Server
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows an attacker with access to local network to gain elevated privileges.
The vulnerability exists in Kerberos implementation when handling password change request. A local attacker can make the operating system to fall back to NT LAN Manager (NTLM) Authentication Protocol as the default authentication protocol.
Successful exploitation of this vulnerability will allow a local attacker to launch a man-in-the-middle (MiTM) attack against the traffic passing between a domain controller and the target machine, intercept and decrypt credentials during password change request.