CVE-2021-21847 : Vulnerability Insights and Analysis
Learn about the multiple integer overflow vulnerabilities in GPAC Project Advanced Content library v1.0.1 leading to memory corruption. Find mitigation steps and impacted systems.
GPAC Project Advanced Content library v1.0.1 is affected by multiple exploitable integer overflow vulnerabilities within the MPEG-4 decoding functionality. These vulnerabilities can be triggered by specially crafted MPEG-4 inputs, leading to heap-based buffer overflow and memory corruption. An attacker can exploit this by convincing a user to open a video.
Understanding CVE-2021-21847
This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-21847.
What is CVE-2021-21847?
CVE-2021-21847 involves integer overflow vulnerabilities in the MPEG-4 decoding feature of GPAC Project Advanced Content library v1.0.1. An adversary can exploit this issue through malicious MPEG-4 content, resulting in memory corruption.
The Impact of CVE-2021-21847
With a CVSS base score of 8.8 (High severity), this vulnerability poses significant risks. Successful exploitation could lead to unauthorized access, data tampering, and service disruption.
Technical Details of CVE-2021-21847
Let's delve deeper into the vulnerability description, affected systems, versions, and the exploitation mechanism.
Vulnerability Description
The unchecked arithmetic in the 'stts' decoder of GPAC Project Advanced Content library results in an integer overflow, leading to a heap-based buffer overflow.
Affected Systems and Versions
GPAC Project Advanced Content commit a8a8d412dabcb129e695c3e7d861fcc81f608304 and v1.0.1 are impacted by this vulnerability.
Exploitation Mechanism
An attacker can trigger this flaw by crafting a malicious MPEG-4 input and enticing a user to open a video containing the exploit.
Mitigation and Prevention
Discover the key steps to mitigate the risks posed by CVE-2021-21847 and safeguard your systems.
Immediate Steps to Take
It is crucial to apply security patches, employ network monitoring, and raise awareness among users to mitigate immediate risks.
Long-Term Security Practices
Implement robust security measures, conduct regular security audits, and stay informed about emerging threats for long-term protection.
Patching and Updates
Ensure timely installation of security patches released by the vendor to address the identified vulnerabilities.