CVE-2020-13901 Explained : Impact and Mitigation

An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_sdp_merge in sdp.c has a stack-based buffer overflow.

Understanding CVE-2020-13901

This CVE involves a vulnerability in janus-gateway that could lead to a stack-based buffer overflow.

What is CVE-2020-13901?

CVE-2020-13901 is a security vulnerability found in janus-gateway up to version 0.10.0, specifically in the janus_sdp_merge function within sdp.c.

The Impact of CVE-2020-13901

The vulnerability could allow an attacker to trigger a stack-based buffer overflow, potentially leading to remote code execution or denial of service.

Technical Details of CVE-2020-13901

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability exists in the janus_sdp_merge function in sdp.c, allowing for a stack-based buffer overflow.

Affected Systems and Versions

Product: janus-gateway (Janus WebRTC Server)
Versions affected: Up to 0.10.0

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious input to trigger the buffer overflow, potentially gaining unauthorized access or disrupting services.

Mitigation and Prevention

Protecting systems from CVE-2020-13901 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update janus-gateway to a patched version that addresses the buffer overflow issue.
Monitor network traffic for any signs of exploitation attempts.

Long-Term Security Practices

Implement secure coding practices to prevent buffer overflows and other common vulnerabilities.
Conduct regular security assessments and penetration testing to identify and address potential weaknesses.

Patching and Updates

Stay informed about security updates for janus-gateway and promptly apply patches to mitigate known vulnerabilities.