CVE-2017-18247 : Vulnerability Insights and Analysis
Learn about CVE-2017-18247, a null pointer dereference vulnerability in Libav 12.2 that can lead to a denial of service. Find out how to mitigate the risk and prevent exploitation.
A null pointer dereference vulnerability in Libav 12.2 can lead to a denial of service when triggered by a specially crafted media file.
Understanding CVE-2017-18247
This CVE involves a vulnerability in the av_audio_fifo_size function within libavutil/audio_fifo.c.
What is CVE-2017-18247?
The vulnerability allows remote attackers to cause a denial of service through a NULL pointer dereference by exploiting a crafted media file.
The Impact of CVE-2017-18247
The vulnerability can result in a denial of service condition, potentially disrupting the availability of the affected system.
Technical Details of CVE-2017-18247
The technical aspects of this CVE are as follows:
Vulnerability Description
A null pointer dereference vulnerability in Libav 12.2 can be triggered by a specially crafted media file, leading to a denial of service.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: 12.2
Exploitation Mechanism
The vulnerability is exploited by manipulating the av_audio_fifo_size function in libavutil/audio_fifo.c using a crafted media file.
Mitigation and Prevention
To address CVE-2017-18247, consider the following steps:
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Implement robust file validation mechanisms to prevent the exploitation of crafted media files.
Long-Term Security Practices
- Regularly update and patch software to mitigate known vulnerabilities.
- Conduct security assessments and audits to identify and address potential weaknesses.
Patching and Updates
Ensure timely installation of security patches and updates to mitigate the risk of exploitation.