CVE-2017-6633 : Security Advisory and Response

Cisco UCS C-Series Rack Servers 3.0(0.234) TCP Throttling Vulnerability

Understanding CVE-2017-6633

Cisco UCS C-Series Rack Servers are affected by a TCP throttling vulnerability that could lead to a denial of service (DoS) attack.

What is CVE-2017-6633?

The vulnerability in Cisco UCS C-Series Rack Servers 3.0(0.234) allows an unauthorized attacker to send a high volume of TCP SYN packets to a specific TCP listening port, potentially causing a DoS scenario due to inadequate rate-limiting protection.

The Impact of CVE-2017-6633

The vulnerability could result in the TCP listening port on affected devices becoming unable to accept new connections, leading to a DoS situation. The related Cisco Bug IDs for this issue are CSCva65544.

Technical Details of CVE-2017-6633

Vulnerability Description

The TCP throttling vulnerability in Cisco UCS C-Series Rack Servers 3.0(0.234) could be exploited by sending a large number of TCP SYN packets to a specific TCP listening port, causing a DoS condition.

Affected Systems and Versions

Product: Cisco UCS C-Series Rack Servers
Version: 3.0(0.234)

Exploitation Mechanism

An unauthorized attacker can exploit the vulnerability by flooding the affected device with TCP SYN packets to a particular TCP listening port.

Mitigation and Prevention

Immediate Steps to Take

Apply the necessary security patches provided by Cisco to address the vulnerability.
Monitor network traffic for any unusual patterns that may indicate a DoS attack.

Long-Term Security Practices

Implement proper network segmentation to limit the impact of potential attacks.
Regularly update and patch systems to prevent known vulnerabilities.

Patching and Updates

Stay informed about security advisories from Cisco and apply patches promptly to secure the infrastructure.