CVE-2020-14034 : Exploit Details and Defense Strategies
Discover the buffer overflow vulnerability in janus-gateway (Janus WebRTC Server) up to version 0.10.0. Learn about the impact, affected systems, exploitation, and mitigation steps.
An issue was discovered in janus-gateway (aka Janus WebRTC Server) through 0.10.0. janus_get_codec_from_pt in utils.c has a Buffer Overflow via long value in an SDP Offer packet.
Understanding CVE-2020-14034
This CVE involves a buffer overflow vulnerability in janus-gateway up to version 0.10.0, specifically in the janus_get_codec_from_pt function in utils.c.
What is CVE-2020-14034?
The vulnerability allows an attacker to trigger a buffer overflow by sending a long value in an SDP Offer packet, potentially leading to arbitrary code execution or denial of service.
The Impact of CVE-2020-14034
Exploitation of this vulnerability could result in a remote attacker compromising the affected system, leading to unauthorized access, data theft, or disruption of services.
Technical Details of CVE-2020-14034
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The vulnerability exists in the janus_get_codec_from_pt function in utils.c due to improper input validation, allowing an attacker to overwrite the buffer with a long value.
Affected Systems and Versions
- Product: janus-gateway (Janus WebRTC Server)
- Versions affected: up to 0.10.0
Exploitation Mechanism
An attacker can exploit this vulnerability by crafting a malicious SDP Offer packet with an excessively long value, triggering the buffer overflow.
Mitigation and Prevention
To address CVE-2020-14034 and enhance system security, follow these mitigation strategies:
Immediate Steps to Take
- Update janus-gateway to a patched version that addresses the buffer overflow vulnerability.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly monitor and audit network traffic for any suspicious activities.
- Conduct security training for developers to emphasize secure coding practices.
Patching and Updates
- Apply security patches promptly to ensure that known vulnerabilities are mitigated effectively.