CVE-2021-40592 : Vulnerability Insights and Analysis
Learn about CVE-2021-40592, a GPAC vulnerability leading to a Denial of Service condition due to an infinite loop in the ISOBMFF reader filter. Find mitigation steps and preventive measures.
This CVE-2021-40592 article provides detailed information about the GPAC vulnerability related to an 'infinite loop' in the ISOBMFF reader filter.
Understanding CVE-2021-40592
This section explains the nature of the vulnerability and its potential impact.
What is CVE-2021-40592?
CVE-2021-40592 relates to a vulnerability in GPAC versions before commit 71460d72ec07df766dab0a4d52687529f3efcf0a (version v1.0.1 onwards). The issue exists in the ISOBMFF reader filter, specifically in isoffin_read.c. Exploiting this vulnerability can lead to a Denial of Service (DoS) due to an infinite loop created by the function isoffin_process(). Attackers can trigger this issue by enticing the victim to open a specially crafted mp4 file.
The Impact of CVE-2021-40592
The vulnerability in GPAC can result in a DoS condition by causing an infinite loop, potentially disrupting services and causing system unresponsiveness.
Technical Details of CVE-2021-40592
This section dives into the technical aspects of the CVE, including the description, affected systems, and exploitation mechanism.
Vulnerability Description
The issue stems from an 'infinite loop' vulnerability in the ISOBMFF reader filter of GPAC versions before commit 71460d72ec07df766dab0a4d52687529f3efcf0a.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions Affected: Version n/a (status: affected)
Exploitation Mechanism
To exploit CVE-2021-40592, attackers need to lure users into opening a malicious mp4 file to trigger the infinite loop issue.
Mitigation and Prevention
Learn about the necessary steps to address and prevent the CVE.
Immediate Steps to Take
- Users should avoid opening untrusted mp4 files.
- Update GPAC to a patched version to mitigate the vulnerability.
Long-Term Security Practices
- Implement robust file validation mechanisms to detect malicious content.
- Conduct regular security audits and penetration testing to identify vulnerabilities.
Patching and Updates
- GPAC users are advised to update to a version beyond commit 71460d72ec07df766dab0a4d52687529f3efcf0a to eliminate the 'infinite loop' vulnerability.