Learn about CVE-2019-9720, a vulnerability in Libav 12.3 allowing stack-based buffer overflow via crafted Matroska video files. Find mitigation steps and prevention measures here.
A vulnerability was discovered in Libav 12.3 that could lead to a stack-based buffer overflow in the subtitle decoder when processing a specially crafted video file in Matroska format. The misuse of the snprintf function in the srt_to_ass function allows attackers to manipulate the stack and potentially execute arbitrary code.
Understanding CVE-2019-9720
This CVE identifies a stack-based buffer overflow vulnerability in Libav 12.3 that can be exploited through a specially crafted Matroska video file.
What is CVE-2019-9720?
The vulnerability in Libav 12.3 allows attackers to corrupt the stack by exploiting the subtitle decoder when processing malicious Matroska video files.
The Impact of CVE-2019-9720
The vulnerability enables attackers to potentially execute arbitrary code by manipulating the stack through the subtitle decoder in Libav 12.3.
Technical Details of CVE-2019-9720
This section provides technical details about the vulnerability.
Vulnerability Description
The vulnerability in Libav 12.3 results from a stack-based buffer overflow in the subtitle decoder due to the misuse of the snprintf function in the srt_to_ass function.
Affected Systems and Versions
Exploitation Mechanism
Mitigation and Prevention
Protecting systems from CVE-2019-9720 requires immediate actions and long-term security practices.
Immediate Steps to Take
Long-Term Security Practices
Patching and Updates