CVE-2019-14442 : Vulnerability Insights and Analysis

Libav version 12.3 is susceptible to a denial of service vulnerability due to an infinite loop and high CPU consumption when processing specific input files.

Understanding CVE-2019-14442

This CVE involves a potential denial of service risk in Libav version 12.3, impacting system performance.

What is CVE-2019-14442?

In the function mpc8_read_header in Libav 12.3, processing a particular input file can trigger an infinite loop, leading to excessive CPU usage and a denial of service if exploited by malicious actors.

The Impact of CVE-2019-14442

The vulnerability can result in a freeze and high CPU consumption, potentially causing a denial of service when handling manipulated files.

Technical Details of CVE-2019-14442

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability lies in the mpc8_read_header function in Libav 12.3, where a specific input file can cause an avio_seek infinite loop, resulting in 100% CPU consumption.

Affected Systems and Versions

Affected Version: Libav 12.3
Systems running Libav 12.3 are vulnerable to this issue.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious file that triggers the infinite loop, leading to a denial of service condition.

Mitigation and Prevention

Protecting systems from CVE-2019-14442 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Libav to a non-vulnerable version if available.
Implement file input validation to prevent the processing of malicious files.

Long-Term Security Practices

Regularly monitor and update software to patch known vulnerabilities.
Conduct security assessments to identify and mitigate potential risks.

Patching and Updates

Apply security patches provided by Libav promptly to address this vulnerability.