CVE-2018-19129 : Exploit Details and Defense Strategies
Learn about CVE-2018-19129 affecting Libav 12.3, leading to a segmentation fault via a crafted mov file. Find mitigation steps and prevention measures here.
Libav 12.3 is affected by a NULL pointer dereference vulnerability in ff_mpa_synth_filter_float in libavcodec/mpegaudiodsp_template.c. This flaw can lead to a segmentation fault when processing a specially crafted mov file.
Understanding CVE-2018-19129
This CVE entry describes a vulnerability in Libav 12.3 that can result in a denial of service condition due to a NULL pointer dereference issue.
What is CVE-2018-19129?
The vulnerability in Libav 12.3 allows an attacker to cause a segmentation fault by exploiting a NULL pointer dereference in the ff_mpa_synth_filter_float function when handling a malicious mov file.
The Impact of CVE-2018-19129
The exploitation of this vulnerability can lead to a denial of service, causing the affected application to crash when processing a specially crafted mov file.
Technical Details of CVE-2018-19129
This section provides more in-depth technical details about the vulnerability.
Vulnerability Description
The issue involves a NULL pointer dereference in ff_mpa_synth_filter_float in libavcodec/mpegaudiodsp_template.c in Libav 12.3, triggered by a specially crafted mov file.
Affected Systems and Versions
- Product: N/A
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited by an attacker by providing a specially crafted mov file to trigger the NULL pointer dereference, leading to a segmentation fault.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Apply security patches or updates provided by the software vendor.
- Avoid opening or processing untrusted mov files from unknown or unverified sources.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions to mitigate known vulnerabilities.
- Implement proper input validation mechanisms to prevent malicious file execution.
Patching and Updates
Ensure that the latest patches and updates for Libav are applied to address this vulnerability.