Rule Category

OS-WINDOWS -- Snort has detected traffic targeting vulnerabilities in a Windows-based operating system. This does not include browser traffic or other software on the OS, but attacks against the OS itself. (such as?)

Alert Message

OS-WINDOWS Microsoft Windows DHCP Server remote code execution attempt

Rule Explanation

This event is generated when an attempt to exploit a vulnerability in a Windows DHCP Server is detected Impact: High Details: There is an issue when using DHCP option 43 in Windows DHCP server that can cause an overflow in the server due to unhandled verification of data sizes and the way how the server reassembles the received data. This can cause the server to overwrite sections of memory with a maliciously crafted code and gain control over the server. Ease of Attack: Medium

What To Look For

Known Usage

No public information

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic:

Technique:

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

CVE

Additional Links

CVE Additional Information

CVE-2019-0626
A memory corruption vulnerability exists in the Windows Server DHCP service when an attacker sends specially crafted packets to a DHCP server, aka 'Windows DHCP Server Remote Code Execution Vulnerability'.
Details
Severity Base Score9.8
Impact Score5.9 Exploit Score3.9
Confidentiality ImpactHIGH Integrity ImpactHIGH
Availability ImpactHIGH Access Vector
Authentication Ease of Access