CVE-2020-14033 : Security Advisory and Response

An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. The vulnerability lies in janus_streaming_rtsp_parse_sdp in plugins/janus_streaming.c, leading to a Buffer Overflow via a crafted RTSP server.

Understanding CVE-2020-14033

This CVE identifies a specific vulnerability in the Janus WebRTC Server that could be exploited by attackers.

What is CVE-2020-14033?

The CVE-2020-14033 vulnerability is a Buffer Overflow issue in the janus_streaming_rtsp_parse_sdp function within the Janus WebRTC Server.

The Impact of CVE-2020-14033

This vulnerability could allow an attacker to execute arbitrary code or crash the server by sending a specially crafted RTSP request, potentially leading to a denial of service (DoS) condition.

Technical Details of CVE-2020-14033

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises due to improper input validation in the janus_streaming_rtsp_parse_sdp function, enabling a buffer overflow.

Affected Systems and Versions

Systems running janus-gateway (Janus WebRTC Server) up to version 0.10.0 are affected.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted RTSP request to trigger the buffer overflow.

Mitigation and Prevention

Protecting systems from CVE-2020-14033 requires immediate action and long-term security measures.

Immediate Steps to Take

Update janus-gateway to a patched version that addresses the buffer overflow vulnerability.
Monitor network traffic for any suspicious RTSP requests.

Long-Term Security Practices

Implement strict input validation mechanisms in the code to prevent buffer overflows.
Conduct regular security audits and code reviews to identify and address vulnerabilities proactively.

Patching and Updates

Regularly check for security updates and patches for janus-gateway to ensure the latest fixes are applied promptly.