CVE-2019-12827 : Vulnerability Insights and Analysis

A vulnerability known as buffer overflow has been identified in the res_pjsip_messaging component of Digium Asterisk, affecting multiple versions. Remote authenticated users can exploit this vulnerability to crash Asterisk by sending a specially crafted SIP MESSAGE message.

Understanding CVE-2019-12827

This CVE involves a buffer overflow vulnerability in Digium Asterisk, impacting various versions.

What is CVE-2019-12827?

The vulnerability in the res_pjsip_messaging component of Digium Asterisk allows remote authenticated users to crash the system by sending a specific SIP MESSAGE message.

The Impact of CVE-2019-12827

Remote authenticated users can crash Asterisk by exploiting the buffer overflow vulnerability.

Technical Details of CVE-2019-12827

This section provides technical details about the vulnerability.

Vulnerability Description

The buffer overflow in res_pjsip_messaging in Digium Asterisk versions 13.21-cert3, 13.27.0, 15.7.2, 16.4.0, and earlier enables remote authenticated users to crash the system.

Affected Systems and Versions

Versions affected: 13.21-cert3, 13.27.0, 15.7.2, 16.4.0, and all earlier versions.

Exploitation Mechanism

Remote authenticated users can exploit the vulnerability by sending a specially crafted SIP MESSAGE message.

Mitigation and Prevention

Protect your system from CVE-2019-12827 with these mitigation strategies.

Immediate Steps to Take

Apply patches provided by Digium to address the vulnerability.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch your Asterisk installation.
Implement strong authentication mechanisms to prevent unauthorized access.

Patching and Updates

Stay informed about security updates from Digium and apply them promptly to secure your system.