SMB: Microsoft Windows NTLM Message Integrity Check Tampering
This signature detects attempts to exploit a known vulnerability against NTLM component of Microsoft Windows. Successful exploitation results in the modification of flags on the NTLM packet without invalidating the Message Integrity Check signature.
Extended Description
A tampering vulnerability exists in Microsoft Windows when a man-in-the-middle attacker is able to successfully bypass the NTLM MIC (Message Integrity Check) protection, aka 'Windows NTLM Tampering Vulnerability'.
Affected Products
Microsoft windows_server_2016
References
CVE: CVE-2019-1166
Short Name
SMB:INFO:CVE-2019-1040-TAMPER
Severity
Minor
Recommended
True
Recommended Action
Drop
Category
SMB
Keywords
CVE-2019-1040 CVE-2019-1166 Check Integrity Message Microsoft NTLM Tampering Windows
Release Date
06/20/2019
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3415
False Positive
Unknown
Vendors
Microsoft
CVSS Score
4.3