CVE-2017-6630 : What You Need to Know

Cisco IP Phone 8851 is affected by a vulnerability in the Session Initiation Protocol (SIP) implementation, potentially leading to a denial of service (DoS) attack if exploited. Learn more about the impact, technical details, and mitigation steps.

Understanding CVE-2017-6630

This CVE involves a weakness in the SIP implementation of Cisco IP Phone 8851, which could be exploited by unauthorized remote attackers to disrupt the phone's service.

What is CVE-2017-6630?

The vulnerability in Cisco IP Phone 8851 11.0(0.1) is triggered by an abnormal SIP message, allowing attackers to manipulate the CANCEL packet and cause a DoS situation by disrupting the phone's service.

The Impact of CVE-2017-6630

Exploiting this vulnerability could result in a denial of service (DoS) condition, leading to a disruption of service on the affected Cisco IP Phone 8851 devices.

Technical Details of CVE-2017-6630

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The vulnerability is caused by an unusual SIP message that can be exploited by tampering with the CANCEL packet, potentially leading to a disruption of service on the Cisco IP Phone 8851.

Affected Systems and Versions

Product: Cisco IP Phone 8851
Version: 11.0(0.1)

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the CANCEL packet, triggering the abnormal SIP message and causing a disruption of service on the affected devices.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of CVE-2017-6630.

Immediate Steps to Take

Apply security patches provided by Cisco to mitigate the vulnerability.
Monitor network traffic for any suspicious activity targeting SIP implementations.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch all network-connected devices to address known vulnerabilities.
Conduct security training for employees to raise awareness of potential threats and best practices.

Patching and Updates

Stay informed about security advisories from Cisco regarding SIP vulnerabilities.
Ensure timely installation of security updates and patches to protect against potential exploits.