CVE-2019-16351 Explained : Impact and Mitigation
Learn about CVE-2019-16351, a vulnerability in ffjpeg software before August 18, 2019, leading to a NULL pointer dereference in huffman_decode_step(). Find mitigation steps and affected versions.
ffjpeg before August 18, 2019, encountered a NULL pointer dereference issue in the huffman_decode_step() function within the huffman.c file.
Understanding CVE-2019-16351
This CVE describes a vulnerability in the ffjpeg software that could lead to a NULL pointer dereference.
What is CVE-2019-16351?
CVE-2019-16351 is a vulnerability in ffjpeg that allows a NULL pointer dereference in the huffman_decode_step() function.
The Impact of CVE-2019-16351
The vulnerability could potentially lead to a denial of service (DoS) situation due to the NULL pointer dereference.
Technical Details of CVE-2019-16351
This section provides more technical insights into the CVE.
Vulnerability Description
The issue arises from a NULL pointer dereference in the huffman_decode_step() function of the huffman.c file in ffjpeg.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: All versions before August 18, 2019
Exploitation Mechanism
An attacker could exploit this vulnerability by crafting a malicious input to trigger the NULL pointer dereference.
Mitigation and Prevention
Protecting systems from CVE-2019-16351 requires specific actions.
Immediate Steps to Take
- Update ffjpeg to a version released after August 18, 2019.
- Monitor security advisories for patches or workarounds.
Long-Term Security Practices
- Regularly update software to the latest versions.
- Implement input validation mechanisms to prevent malformed inputs.
Patching and Updates
- Apply patches provided by the ffjpeg project to address the NULL pointer dereference vulnerability.