CVE-2018-5684 : Exploit Details and Defense Strategies

CVE-2018-5684 was published on January 14, 2018, by MITRE. The vulnerability exists in Libav versions up to 12.2, specifically in the ff_mov_read_stsd_entries function of libavformat/mov.c. Attackers could exploit this issue using a specially crafted avi file to trigger a denial of service, leading to program failure and segmentation fault.

Understanding CVE-2018-5684

This section provides insights into the nature and impact of CVE-2018-5684.

What is CVE-2018-5684?

CVE-2018-5684 is a vulnerability in Libav that stems from an incorrect use of memcpy in the ff_mov_read_stsd_entries function. This flaw allows remote attackers to exploit the vulnerability by using a malicious avi file to cause a denial of service, resulting in program failure and segmentation fault.

The Impact of CVE-2018-5684

The vulnerability poses a significant risk as attackers can remotely exploit it to disrupt services and crash programs through a crafted avi file.

Technical Details of CVE-2018-5684

Explore the technical aspects of CVE-2018-5684 to understand its implications.

Vulnerability Description

The vulnerability in Libav versions up to 12.2 arises from an incorrect memcpy call in the ff_mov_read_stsd_entries function of libavformat/mov.c.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: Up to 12.2

Exploitation Mechanism

Attackers can exploit this vulnerability by using a specially crafted avi file to trigger a denial of service, resulting in program failure and segmentation fault.

Mitigation and Prevention

Learn how to mitigate the risks associated with CVE-2018-5684.

Immediate Steps to Take

Update Libav to a patched version that addresses the vulnerability.
Avoid opening avi files from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and libraries to patch known vulnerabilities.
Implement network security measures to prevent remote exploitation.

Patching and Updates

Ensure timely installation of security patches and updates to mitigate the risk of exploitation.