CVE-2019-17453 : Security Advisory and Response
Learn about CVE-2019-17453, a vulnerability in Bento4 1.5.1.0 that allows a NULL pointer dereference, potentially leading to exploitation. Find out how to mitigate this issue and secure your systems.
Bento4 1.5.1.0 has a vulnerability where a NULL pointer is dereferenced in specific functions, potentially leading to exploitation.
Understanding CVE-2019-17453
What is CVE-2019-17453?
The vulnerability in Bento4 1.5.1.0 allows for a NULL pointer dereference in certain functions, posing a security risk.
The Impact of CVE-2019-17453
The vulnerability can be exploited using tools like mp4encrypt or mp4compact, potentially leading to a denial of service or arbitrary code execution.
Technical Details of CVE-2019-17453
Vulnerability Description
The bug occurs in the Action function of AP4_DescriptorListWriter class and the WriteFields function of AP4_IodsAtom class in specific files within the Core directory of Bento4.
Affected Systems and Versions
- Product: Bento4
- Version: 1.5.1.0
Exploitation Mechanism
The vulnerability can be triggered using the mp4encrypt or mp4compact tools.
Mitigation and Prevention
Immediate Steps to Take
- Update Bento4 to a patched version that addresses the NULL pointer dereference.
- Avoid using untrusted MP4 files or tools that may trigger the vulnerability.
Long-Term Security Practices
- Regularly update software to the latest versions to patch known vulnerabilities.
- Implement proper input validation and error handling in software development.
Patching and Updates
Apply patches and updates provided by Bento4 to fix the vulnerability and enhance system security.