CVE-2021-40576 Explained : Impact and Mitigation

This CVE record involves a null pointer dereference vulnerability in the binary MP4Box in Gpac 1.0.1, impacting the gf_isom_get_payt_count function in hint_track.c. Attackers could exploit this vulnerability to cause a denial of service.

Understanding CVE-2021-40576

This section provides insights into the nature and impact of CVE-2021-40576.

What is CVE-2021-40576?

The binary MP4Box in Gpac 1.0.1 is susceptible to a null pointer dereference vulnerability in the gf_isom_get_payt_count function within hint_track.c. This vulnerability could be exploited by malicious actors to trigger a denial of service attack.

The Impact of CVE-2021-40576

The presence of this vulnerability allows attackers to exploit the GF_ISOM_GET_PAYT_COUNT function in hint_track.c, leading to a denial of service condition.

Technical Details of CVE-2021-40576

Explore the technical aspects of the vulnerability and affected systems in this section.

Vulnerability Description

The vulnerability lies in the gf_isom_get_payt_count function within hint_track.c of Gpac 1.0.1, causing a null pointer dereference issue.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: n/a (affected)

Exploitation Mechanism

The vulnerability can be exploited by attackers to trigger a denial of service by manipulating the GF_ISOM_GET_PAYT_COUNT function.

Mitigation and Prevention

Learn about the steps to mitigate and prevent the impact of CVE-2021-40576.

Immediate Steps to Take

Organizations should update to a patched version of Gpac to mitigate this vulnerability.
Monitor for any unusual activities that could indicate an exploitation attempt.

Long-Term Security Practices

Regularly update software to the latest versions to patch known vulnerabilities.
Implement network security measures to detect and prevent possible attacks.

Patching and Updates

Apply patches provided by Gpac to address the null pointer dereference vulnerability.