CVE-2021-40559 : Exploit Details and Defense Strategies

This CVE record details a null pointer deference vulnerability in gpac through version 1.0.1, leading to a denial of service.

Understanding CVE-2021-40559

This section provides an overview of the null pointer deference vulnerability present in gpac.

What is CVE-2021-40559?

CVE-2021-40559 is a vulnerability in gpac up to version 1.0.1 caused by the naludmx_parse_nal_avc function in reframe_nalu. This flaw allows for a denial of service exploitation.

The Impact of CVE-2021-40559

The vulnerability can be exploited to cause a denial of service attack on the affected systems.

Technical Details of CVE-2021-40559

This section outlines the technical details of the vulnerability.

Vulnerability Description

The null pointer deference vulnerability in gpac through version 1.0.1 allows attackers to trigger a denial of service by exploiting the naludmx_parse_nal_avc function in reframe_nalu.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: All versions up to 1.0.1

Exploitation Mechanism

Attackers exploit the null pointer deference vulnerability in gpac by leveraging the naludmx_parse_nal_avc function in reframe_nalu to launch denial of service attacks.

Mitigation and Prevention

Explore the mitigation strategies to address CVE-2021-40559.

Immediate Steps to Take

Update gpac to the latest version to eliminate the vulnerability.
Monitor systems for any unusual activities that could indicate a denial of service attack.

Long-Term Security Practices

Conduct regular security assessments and audits to identify vulnerabilities.
Implement access controls and restrictions to prevent unauthorized exploitation.

Patching and Updates

Ensure regular patching of software and systems to address known vulnerabilities like CVE-2021-40559.