Description
A security feature bypass vulnerability exists where a NETLOGON message is able to obtain the session key and sign messages. To exploit this vulnerability, an attacker could send a specially crafted authentication request. An attacker who successfully exploited this vulnerability could access another machine using the original user privileges. The issue has been addressed by changing how NTLM validates network authentication messages.
Metrics
CVSS 3.1 8.5/10
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 Version 1703 | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1803 | >= 10.0.0, < publication |
| Microsoft | Windows Server, version 1803 (Server Core Installation) | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1809 | >= 10.0.17763.0, < publication |
| Microsoft | Windows 10 Version 1809 | >= 10.0.0, < publication |
| Microsoft | Windows Server 2019 | >= 10.0.17763.0, < publication |
| Microsoft | Windows Server 2019 (Server Core installation) | >= 10.0.17763.0, < publication |
| Microsoft | Windows 10 Version 1709 for 32-bit Systems | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1709 | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1903 for 32-bit Systems | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1903 for x64-based Systems | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1903 for ARM64-based Systems | >= 10.0.0, < publication |
| Microsoft | Windows Server, version 1903 (Server Core installation) | >= 10.0.0, < publication |
| Microsoft | Windows 10 Version 1507 | >= 10.0.10240.0, < publication |
| Microsoft | Windows 10 Version 1607 | >= 10.0.14393.0, < publication |
| Microsoft | Windows Server 2016 | >= 10.0.14393.0, < publication |
| Microsoft | Windows Server 2016 (Server Core installation) | >= 10.0.14393.0, < publication |
| Microsoft | Windows 7 | >= 6.1.0, < publication |
| Microsoft | Windows 7 Service Pack 1 | >= 6.1.0, < publication |
| Microsoft | Windows 8.1 | >= 6.3.0, < publication |
| Microsoft | Windows Server 2008 Service Pack 2 | >= 6.0.6003.0, < publication |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | >= 6.0.6003.0, < publication |
| Microsoft | Windows Server 2008 Service Pack 2 | >= 6.0.0, < publication |
| Microsoft | Windows Server 2008 Service Pack 2 | >= 6.0.6003.0, < publication |
| Microsoft | Windows Server 2008 R2 Systems Service Pack 1 | >= 6.1.0, < publication |
| Microsoft | Windows Server 2008 R2 Service Pack 1 | >= 6.1.7601.0, < publication |
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | >= 6.1.7601.0, < publication |
| Microsoft | Windows Server 2012 | >= 6.2.9200.0, < publication |
| Microsoft | Windows Server 2012 (Server Core installation) | >= 6.2.9200.0, < publication |
| Microsoft | Windows Server 2012 R2 | >= 6.3.9600.0, < publication |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | >= 6.3.9600.0, < publication |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1019
- http://packetstormsecurity.com/files/153639/Microsoft-Windows-HTTP-To-SMB-NTLM-Reflection-Privilege-Escalation.htmlThird Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1019Patch, Vendor Advisory
Timeline
- Published
- Jun 12, 2019
- Last modified
- Jun 17, 2026
- NVD status
- Modified