CVE-2017-7206 Explained : Impact and Mitigation

CVE-2017-7206 pertains to a vulnerability in the libavcodec library of libav version 9.21, allowing for a denial of service attack and potential leakage of sensitive information.

Understanding CVE-2017-7206

This CVE involves a heap-based buffer over-read vulnerability in the ff_h2645_extract_rbsp function.

What is CVE-2017-7206?

The vulnerability in the libavcodec library of libav version 9.21 can be exploited through a specially crafted h264 video file, leading to a denial of service and potential information exposure.

The Impact of CVE-2017-7206

The exploitation of this vulnerability can result in a service becoming unavailable and the potential leakage of sensitive data.

Technical Details of CVE-2017-7206

This section provides more technical insights into the vulnerability.

Vulnerability Description

The ff_h2645_extract_rbsp function in libavcodec in libav 9.21 allows remote attackers to cause a denial of service or obtain sensitive information from process memory via a crafted h264 video file.

Affected Systems and Versions

Affected Product: Not applicable
Affected Vendor: Not applicable
Affected Version: Not applicable

Exploitation Mechanism

The vulnerability can be exploited through a specially crafted h264 video file, triggering a heap-based buffer over-read.

Mitigation and Prevention

Protecting systems from CVE-2017-7206 requires immediate actions and long-term security practices.

Immediate Steps to Take

Implement patches or updates provided by the vendor
Avoid opening or accessing suspicious h264 video files

Long-Term Security Practices

Regularly update software and libraries
Conduct security assessments and audits periodically

Patching and Updates

Ensure that the affected systems are patched with the latest updates to mitigate the vulnerability.