Intrusion Prevention

MS.DNS.Server.CH.Query.DoS

Description

This indicates an attack attempt to exploit an Denial of Services vulnerability in Microsoft Windows DNS Server.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted packet. A remote attacker may be able to exploit this to crash affected machines via a crafted packet.

Affected Products

Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)

Impact

Denial of Service: Remote attackers can crash 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-2017-0171

CVE References

CVE-2017-0171