CVE-2019-1206 Explained : Impact and Mitigation
Learn about CVE-2019-1206, a memory corruption vulnerability in Windows Server DHCP service allowing denial of service attacks. Find out affected systems and mitigation steps.
A memory corruption vulnerability in the Windows Server DHCP service allows attackers to trigger a denial of service by sending manipulated packets to a DHCP failover server.
Understanding CVE-2019-1206
This CVE is related to a memory corruption issue in the Windows Server DHCP service that can be exploited to cause a denial of service attack.
What is CVE-2019-1206?
- The vulnerability arises from the reception of specially crafted packets by a DHCP failover server in Windows Server, leading to a denial of service.
- Referred to as the 'Windows DHCP Server Denial of Service Vulnerability'.
The Impact of CVE-2019-1206
- Attackers can exploit this vulnerability to disrupt the DHCP service on affected Windows Server systems.
Technical Details of CVE-2019-1206
This section provides technical insights into the vulnerability.
Vulnerability Description
- A memory corruption flaw in the Windows Server DHCP service allows attackers to exploit the system by sending manipulated packets.
Affected Systems and Versions
- Windows Server versions 2012, 2012 R2, 2016, 2019, and specific Core installations are affected.
- Windows Server, version 1903 (Server Core installation) is also impacted.
Exploitation Mechanism
- Attackers can trigger the vulnerability by sending specifically crafted packets to a DHCP failover server in Windows Server.
Mitigation and Prevention
Protecting systems from CVE-2019-1206 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by Microsoft promptly.
- Monitor network traffic for any suspicious activities targeting DHCP services.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update and patch all software and systems to prevent vulnerabilities.
- Conduct security audits and penetration testing to identify and address potential weaknesses.
Patching and Updates
- Stay informed about security advisories from Microsoft and apply patches as soon as they are released.