Man-in-the-Middle (MitM) attack in Windows and Windows Server - CVE-2019-1040
Published: June 12, 2019 / Updated: April 18, 2021
Vulnerability identifier: #VU47858
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2019-1040
CWE-ID: CWE-300
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.
The vulnerability exists due to a tampering issue. A remote attacker can perform a man-in-the-middle attack, bypass the NTLM MIC (Message Integrity Check) protection and downgrade NTLM security features.
How to mitigate CVE-2019-1040
Install updates from vendor's website.