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CVE-2021-21860 : What You Need to Know

Discover the details of CVE-2021-21860, an integer truncation vulnerability in the GPAC Project's Advanced Content library v1.0.1 leading to a heap-based buffer overflow. Learn about the impact, affected systems, and mitigation strategies.

An integer truncation vulnerability has been identified in the MPEG-4 decoding functionality of the GPAC Project's Advanced Content library v1.0.1. This vulnerability could lead to a heap-based buffer overflow and memory corruption when processing specially crafted MPEG-4 inputs, potentially exploited by triggering the vulnerability through video files.

Understanding CVE-2021-21860

This section provides insights into the nature and impact of the CVE-2021-21860 vulnerability.

What is CVE-2021-21860?

The CVE-2021-21860 vulnerability is an exploitable integer truncation flaw within the GPAC Project's Advanced Content library v1.0.1, allowing malicious actors to trigger a heap-based buffer overflow by manipulating MPEG-4 inputs, leading to memory corruption.

The Impact of CVE-2021-21860

With a CVSS base score of 8.8 (High), this vulnerability poses a high risk to confidentiality, integrity, and availability. Attackers can exploit this flaw remotely without requiring user privileges and user interaction.

Technical Details of CVE-2021-21860

Delve into the specifics of the vulnerability to understand its implications and affected systems.

Vulnerability Description

The vulnerability arises due to improper memory allocation within the GPAC Project's Advanced Content library when processing 'trik' FOURCC codes, leading to a heap-based buffer overflow.

Affected Systems and Versions

The affected version includes the GPAC Project Advanced Content commit a8a8d412dabcb129e695c3e7d861fcc81f608304 and GPAC Project Advanced Content v1.0.1.

Exploitation Mechanism

Attackers can exploit this vulnerability by coercing users to open a video file containing maliciously crafted MPEG-4 inputs, triggering the heap-based buffer overflow.

Mitigation and Prevention

Learn about the steps to mitigate the risks associated with CVE-2021-21860 and enhance security measures.

Immediate Steps to Take

Users should update the affected systems to non-vulnerable versions promptly and exercise caution when opening video files from untrusted sources.

Long-Term Security Practices

Implementing network security measures, such as firewalls and intrusion detection systems, can help prevent potential attacks exploiting this vulnerability.

Patching and Updates

Maintain regular updates and patches for the GPAC Project to address known vulnerabilities and enhance system security.

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