CVE-2021-31259 : Exploit Details and Defense Strategies
Learn about CVE-2021-31259, a vulnerability in GPAC 1.0.1 that allows attackers to trigger a denial of service via crafted files in the MP4Box command. Find out the impact, affected systems, exploitation details, and mitigation steps.
A detailed overview of CVE-2021-31259 highlighting its impact, technical details, and mitigation steps.
Understanding CVE-2021-31259
This section will provide insights into the vulnerability, its impact, and affected systems.
What is CVE-2021-31259?
The gf_isom_cenc_get_default_info_internal function in GPAC 1.0.1 allows attackers to cause a denial of service (NULL pointer dereference) via a crafted file in the MP4Box command.
The Impact of CVE-2021-31259
The vulnerability in GPAC 1.0.1 can be exploited by attackers to trigger a denial of service, potentially leading to system crashes or unresponsiveness.
Technical Details of CVE-2021-31259
This section will delve into the specifics of the vulnerability, affected systems, and how it can be exploited.
Vulnerability Description
The flaw lies in the gf_isom_cenc_get_default_info_internal function in GPAC 1.0.1, allowing for a NULL pointer dereference via a malicious file.
Affected Systems and Versions
GPAC 1.0.1 is confirmed to be affected by this vulnerability, posing a risk to systems utilizing this version.
Exploitation Mechanism
Attackers can exploit this vulnerability by providing a specially crafted file through the MP4Box command, triggering the NULL pointer dereference and leading to a denial of service.
Mitigation and Prevention
In this section, we will discuss immediate steps to mitigate the vulnerability and best practices for long-term security.
Immediate Steps to Take
Users are advised to update to a patched version of GPAC to prevent exploitation of this vulnerability. Additionally, exercise caution when handling untrusted media files.
Long-Term Security Practices
Implementing secure coding practices, conducting regular security audits, and staying informed about software updates can help bolster the overall security posture.
Patching and Updates
Always apply security patches promptly and keep software up to date to address known vulnerabilities and protect systems from potential exploits.