CVE-2021-40570 : What You Need to Know

This CVE record discusses a double-free vulnerability in the avc_compute_poc function in av_parsers.c within the binary MP4Box in Gpac 1.0.1, potentially leading to denial of service, code execution, and privilege escalation.

Understanding CVE-2021-40570

This section provides insights into the nature and impact of the CVE-2021-40570 vulnerability.

What is CVE-2021-40570?

The binary MP4Box in Gpac 1.0.1 is susceptible to a double-free vulnerability in the avc_compute_poc function in av_parsers.c. This flaw can be exploited by attackers to trigger a denial of service, execute arbitrary code, and elevate their privileges.

The Impact of CVE-2021-40570

The vulnerability has the potential to cause severe consequences:

Denial of service attacks can disrupt services and applications.
Remote code execution may lead to unauthorized access and data breaches.
Privilege escalation could allow attackers to gain elevated system privileges.

Technical Details of CVE-2021-40570

Explore the technical aspects and implications of CVE-2021-40570 below.

Vulnerability Description

The double-free vulnerability in the avc_compute_poc function in av_parsers.c enables attackers to exploit the MP4Box binary in Gpac 1.0.1, with various harmful outcomes.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: n/a (all versions affected)

Exploitation Mechanism

The vulnerability can be exploited remotely, enabling attackers to potentially launch denial of service attacks, execute malicious code, and gain elevated privileges.

Mitigation and Prevention

Discover the necessary steps to address and prevent CVE-2021-40570.

Immediate Steps to Take

Implement a temporary workaround by disabling the vulnerable functionality if possible.
Monitor network traffic for any suspicious activities that could indicate an ongoing attack.

Long-Term Security Practices

Regularly update software and apply patches to mitigate potential vulnerabilities.
Conduct security assessments and penetration testing to proactively identify and address security flaws.

Patching and Updates

Ensure that the latest updates and patches are applied promptly to eliminate the vulnerability and enhance overall system security.