CVE-2022-3666 - Critical Vulnerability Discovered in Axiomatic Bento4: Use After Free in AP4_LinearReader::Advance Function

A recent vulnerability, CVE-2022-3666, classified as critical, has been discovered in the Axiomatic Bento4 software suite. Axiomatic Bento4 is a popular collection of tools and libraries for working with MP4 and MPEG-DASH files. The vulnerability resides within the AP4_LinearReader::Advance function of the file Ap4LinearReader.cpp, and affects the mp42ts component. The manipulation of this issue leads to a use-after-free vulnerability, which can be used for potential attacks by an adversary. Furthermore, the attack can be launched remotely, placing users at a higher risk. This vulnerability has been assigned an identifier of VDB-212006.

Code Snippet

A critical part of the vulnerability lies within the AP4_LinearReader::Advance function in the Ap4LinearReader.cpp file:

AP4_Result
AP4_LinearReader::Advance()
{
    ...
    // Release the memory
    delete sample_data;
    ...

    return AP4_SUCCESS;
}

The code above exhibits the use-after-free vulnerability due to releasing a memory area with delete sample_data; before the end of the function, leading to potential exploitation.

Original References

- Bento4 GitHub Repository
- Vulnerability Database Record

Exploit Details

For an attacker, this vulnerability represents a potential target for gaining unauthorized access, escalation of privileges, or execution of arbitrary code on the affected systems. Remote exploitation is possible due to the nature of the vulnerability, which grants a higher impact. As the exploit is now public, malicious actors may attempt to utilize it for their own purposes, making it crucial for users of the Axiomatic Bento4 suite to patch their software or implement workarounds as soon as possible.

Mitigation

To protect your systems from this vulnerability, it is recommended to update your Axiomatic Bento4 installation to the latest version available. Check the official GitHub repository for updates and patch information. You should also monitor any relevant security announcements and pay close attention to your system's configurations to guard against potential attacks.

Conclusion

The discovery of CVE-2022-3666, a critical vulnerability in Axiomatic Bento4, highlights the importance of maintaining up-to-date software and actively monitoring security issues. With the potential for remote exploitation, users should take immediate steps to update or mitigate their software to avoid potential attacks leveraging this vulnerability. Stay vigilant, and ensure your systems are protected against the growing threats in the cybersecurity landscape.

Timeline

Published on: 10/26/2022 19:15:00 UTC
Last modified on: 10/28/2022 17:46:00 UTC