CVE-2018-1000155 : What You Need to Know
Learn about CVE-2018-1000155, a critical security vulnerability in OpenFlow handshake process, leading to Denial of Service, Unauthorized Access, and Network Instability. Find mitigation steps and prevention measures.
OpenFlow version 1.0 onwards contains a security vulnerability in the OpenFlow handshake process, involving the DPID (DataPath IDentifier) in the features_reply message. This vulnerability can lead to Denial of Service, Unauthorized Access, and Network Instability.
Understanding CVE-2018-1000155
This CVE identifies a critical vulnerability in the OpenFlow protocol that can be exploited by attackers to disrupt network operations and gain unauthorized access.
What is CVE-2018-1000155?
The vulnerability in OpenFlow version 1.0 and later stems from the inherent trust placed in the DPID within the features_reply message by the controller. Attackers can exploit this trust to cause various issues.
The Impact of CVE-2018-1000155
The security flaw can result in Denial of Service attacks, unauthorized network access, and network instability, posing significant risks to network infrastructure and operations.
Technical Details of CVE-2018-1000155
OpenFlow version 1.0 onwards is susceptible to a critical security vulnerability that can be exploited by malicious actors.
Vulnerability Description
The vulnerability lies in the OpenFlow handshake process, specifically in the DPID within the features_reply message, which is inherently trusted by the controller.
Affected Systems and Versions
- OpenFlow version 1.0 and later
Exploitation Mechanism
To exploit this vulnerability, an attacker needs to establish a network connection with the OpenFlow controller and initiate the OpenFlow handshake.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of CVE-2018-1000155.
Immediate Steps to Take
- Implement network segmentation to limit the impact of potential attacks
- Regularly monitor network traffic for any suspicious activity
- Update OpenFlow to a patched version if available
Long-Term Security Practices
- Conduct regular security assessments and penetration testing
- Educate network administrators and users on best security practices
Patching and Updates
- Apply patches provided by OpenFlow to address the vulnerability and enhance network security