CVE-2021-32135 : What You Need to Know
Learn about CVE-2021-32135, a vulnerability in GPAC 1.0.1 that allows denial of service attacks via crafted MP4Box command files. Explore impact, technical details, and mitigation steps.
This article provides details about CVE-2021-32135, a vulnerability in the trak_box_size function in GPAC 1.0.1 that allows attackers to cause a denial of service via a crafted file in the MP4Box command.
Understanding CVE-2021-32135
This section delves into the specifics of the CVE-2021-32135 vulnerability and its implications.
What is CVE-2021-32135?
The trak_box_size function in GPAC 1.0.1 is susceptible to a denial of service attack (NULL pointer dereference) when processing a specially crafted file through the MP4Box command.
The Impact of CVE-2021-32135
Exploitation of this vulnerability can result in a denial of service, potentially disrupting the functionality of systems running the affected GPAC version.
Technical Details of CVE-2021-32135
This section provides technical insights into the vulnerability's description, affected systems, and the exploitation mechanism.
Vulnerability Description
The flaw in the trak_box_size function of GPAC 1.0.1 allows attackers to trigger a NULL pointer dereference through a malicious file input, leading to a crash or service unavailability.
Affected Systems and Versions
The vulnerability affects GPAC version 1.0.1 specifically when handling files using the MP4Box command.
Exploitation Mechanism
By creating a specially crafted file and feeding it into the MP4Box command, threat actors can exploit the vulnerability to trigger the denial of service condition.
Mitigation and Prevention
This section outlines the necessary steps to mitigate the risk posed by CVE-2021-32135 and prevent exploitation.
Immediate Steps to Take
It is recommended to update the GPAC software to a patched version or consider alternative software to avoid exposure to this vulnerability.
Long-Term Security Practices
Regularly updating software, implementing secure coding practices, and conducting security assessments can help defend against similar vulnerabilities in the future.
Patching and Updates
Ensure that GPAC is regularly updated to the latest version, including security patches released by the vendor to address known vulnerabilities.