CVE-2018-14767 : Vulnerability Insights and Analysis

Kamailio versions prior to 5.0.7 and 5.1.x before 5.1.4 are affected by a vulnerability that can lead to a system crash and potential code execution.

Understanding CVE-2018-14767

This CVE involves a vulnerability in Kamailio versions that could be exploited for denial of service attacks and unauthorized code execution.

What is CVE-2018-14767?

A flaw in Kamailio versions prior to 5.0.7 and 5.1.x before 5.1.4 allows a manipulated SIP message to cause a segmentation fault and system crash, potentially enabling a denial of service attack and unauthorized code execution.

The Impact of CVE-2018-14767

The vulnerability could lead to a system crash, denial of service attacks, and unauthorized code execution, posing a significant risk to affected systems.

Technical Details of CVE-2018-14767

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability in Kamailio versions is due to improper input validation in the core function 'build_res_buf_from_sip_req', allowing a crafted SIP message to trigger a segmentation fault and system crash.

Affected Systems and Versions

Kamailio versions prior to 5.0.7
Kamailio 5.1.x before 5.1.4

Exploitation Mechanism

Manipulated SIP message with a duplicated 'To' header and an empty 'To' tag
Lack of proper input verification in the core function 'build_res_buf_from_sip_req'

Mitigation and Prevention

Protect your systems from CVE-2018-14767 with these mitigation strategies.

Immediate Steps to Take

Update Kamailio to version 5.0.7 or 5.1.4 to patch the vulnerability
Monitor network traffic for any suspicious activity

Long-Term Security Practices

Implement strict input validation mechanisms in SIP message processing
Regularly update and patch Kamailio to address security vulnerabilities

Patching and Updates

Apply security updates and patches provided by Kamailio to prevent exploitation of this vulnerability