SB2019061123 - NTLM Tampering in Microsoft Windows
Published: June 11, 2019 Updated: October 21, 2020
Security Bulletin ID
SB2019061123
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Man-in-the-Middle (MitM) attack (CVE-ID: CVE-2019-1040)
CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')
CVSSv4: 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
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.
Remediation
Install update from vendor's website.