CVE-2021-40571 Explained : Impact and Mitigation
Learn about CVE-2021-40571, a double-free vulnerability in MP4Box in Gpac 1.0.1 leading to denial of service and code execution. Find mitigation steps and long-term security practices.
This CVE record discusses a double-free vulnerability in the binary MP4Box in Gpac 1.0.1 that can lead to a denial of service, code execution, and privilege escalation.
Understanding CVE-2021-40571
This section provides insights into the nature and impact of CVE-2021-40571.
What is CVE-2021-40571?
The binary MP4Box in Gpac 1.0.1 contains a double-free vulnerability in the ilst_box_read function in box_code_apple.c. This vulnerability allows attackers to launch denial of service attacks, execute arbitrary code, and potentially escalate their privileges on the system.
The Impact of CVE-2021-40571
The impact of this vulnerability includes:
- Denial of service attacks
- Arbitrary code execution
- Privilege escalation on the affected system
Technical Details of CVE-2021-40571
This section delves into the technical details of CVE-2021-40571.
Vulnerability Description
The vulnerability arises from a double-free issue in the ilst_box_read function in the box_code_apple.c file of the binary MP4Box in Gpac 1.0.1.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Affected Versions: n/a
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating the ilst_box_read function, leading to a double-free condition that can be abused for denial of service, code execution, and privilege escalation.
Mitigation and Prevention
In this section, we discuss the steps to mitigate and prevent the CVE-2021-40571 vulnerability.
Immediate Steps to Take
- Update Gpac to the latest version that contains a patch for CVE-2021-40571
- Monitor network traffic for any suspicious activities
- Implement least privilege access controls
Long-Term Security Practices
- Conduct regular security audits and code reviews
- Stay informed about security advisories and updates from Gpac
- Enhance network security measures to detect and prevent similar vulnerabilities
Patching and Updates
Ensure timely patching and updates for Gpac to address known vulnerabilities and enhance system security.