CVE-2019-15639 : Exploit Details and Defense Strategies

A vulnerability has been discovered in the main/translate.c file of Sangoma Asterisk 13.28.0 and 16.5.0 versions, allowing a remote attacker to crash the system by manipulating a specific RTP packet.

Understanding CVE-2019-15639

This CVE identifies a vulnerability in Sangoma Asterisk versions 13.28.0 and 16.5.0 that can be exploited by a remote attacker during a call.

What is CVE-2019-15639?

The vulnerability in the main/translate.c file of Sangoma Asterisk versions 13.28.0 and 16.5.0 allows a remote attacker to crash the system by manipulating a specific RTP packet during a call.

The Impact of CVE-2019-15639

Exploitation of this vulnerability can lead to a system crash in a specific scenario, potentially disrupting communication services.

Technical Details of CVE-2019-15639

This section provides technical details about the vulnerability.

Vulnerability Description

The vulnerability in Sangoma Asterisk versions 13.28.0 and 16.5.0 enables a remote attacker to trigger a system crash by manipulating a specific RTP packet during a call.

Affected Systems and Versions

Sangoma Asterisk 13.28.0
Sangoma Asterisk 16.5.0

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker who is capable of manipulating a specific RTP packet during a call, leading to a crash in a particular scenario.

Mitigation and Prevention

Protecting systems from CVE-2019-15639 is crucial to maintaining security.

Immediate Steps to Take

Apply security patches provided by Sangoma for the affected versions.
Monitor network traffic for any suspicious activity related to RTP packets.

Long-Term Security Practices

Regularly update and patch Asterisk installations to mitigate known vulnerabilities.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from Sangoma and apply patches promptly to address vulnerabilities.