Intrusion Prevention

MS.Windows.DNSAPI.Nsec3.Handling.Code.Execution

Description

This indicates an attack attempt to exploit a Code Execution vulnerability in Microsoft Windows.
The vulnerability is due to an error when DNSAPI.dll handles a query response with malformed NSEC3 record. A remote attacker may be able to exploit this to execute arbitrary code on vulnerable systems.

Affected Products

Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows Server 2012 R2
Windows RT 8.1
Windows Server 2012 R2 (Server Core installation)
Windows 10 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 Version 1511 for x64-based Systems
Windows 10 Version 1511 for 32-bit Systems
Windows Server 2016
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows Server 2016 (Server Core installation)
Windows 10 Version 1703 for 32-bit Systems
Windows 10 Version 1703 for x64-based Systems

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11779

CVE References

CVE-2017-11779