Windows NTLM Tampering Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- 6 proofs of concept on GitHub
Summary
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. An attacker who successfully exploited this vulnerability could gain the ability to downgrade NTLM security features. To exploit this vulnerability, the attacker would need to tamper with the NTLM exchange. The attacker could then modify flags of the NTLM packet without invalidating the signature. The update addresses the vulnerability by hardening NTLM MIC protection on the server-side.
Timeline
- CVE published
- Record last updated
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Microsoft Windows 10 Version 1703
From 10.0.0
- Microsoft Windows 10 Version 1803
From 10.0.0
- Microsoft Windows Server, version 1803 (Server Core Installation)
From 10.0.0
- Microsoft Windows 10 Version 1809
From 10.0.17763.0
- Microsoft Windows 10 Version 1809
From 10.0.0
- Microsoft Windows Server 2019
From 10.0.17763.0
- Microsoft Windows Server 2019 (Server Core installation)
From 10.0.17763.0
- Microsoft Windows 10 Version 1709 for 32-bit Systems
From 10.0.0
- Microsoft Windows 10 Version 1709
From 10.0.0
- Microsoft Windows 10 Version 1903 for 32-bit Systems
From 10.0.0
- Microsoft Windows 10 Version 1903 for x64-based Systems
From 10.0.0
- Microsoft Windows 10 Version 1903 for ARM64-based Systems
From 10.0.0
- Microsoft Windows Server, version 1903 (Server Core installation)
From 10.0.0
- Microsoft Windows 10 Version 1507
From 10.0.10240.0
- Microsoft Windows 10 Version 1607
From 10.0.14393.0
- Microsoft Windows Server 2016
From 10.0.14393.0
- Microsoft Windows Server 2016 (Server Core installation)
From 10.0.14393.0
- Microsoft Windows 7
From 6.1.0
- Microsoft Windows 7 Service Pack 1
From 6.1.0
- Microsoft Windows 8.1
From 6.3.0
- Microsoft Windows Server 2008 Service Pack 2
From 6.0.6003.0
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)
From 6.0.6003.0
- Microsoft Windows Server 2008 Service Pack 2
From 6.0.0
- Microsoft Windows Server 2008 Service Pack 2
From 6.0.6003.0
- Microsoft Windows Server 2008 R2 Systems Service Pack 1
From 6.1.0
- Microsoft Windows Server 2008 R2 Service Pack 1
From 6.1.7601.0
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)
From 6.1.7601.0
- Microsoft Windows Server 2012
From 6.2.9200.0
- Microsoft Windows Server 2012 (Server Core installation)
From 6.2.9200.0
- Microsoft Windows Server 2012 R2
From 6.3.9600.0
- Microsoft Windows Server 2012 R2 (Server Core installation)
From 6.3.9600.0