CVE-2020-36407 : Vulnerability Insights and Analysis

libavif 0.8.0 and 0.8.1 has an out-of-bounds write in avifDecoderDataFillImageGrid.

Understanding CVE-2020-36407

libavif 0.8.0 and 0.8.1 are affected by an out-of-bounds write vulnerability in avifDecoderDataFillImageGrid.

What is CVE-2020-36407?

This CVE refers to a specific vulnerability found in versions 0.8.0 and 0.8.1 of libavif, where an out-of-bounds write occurs in the avifDecoderDataFillImageGrid function.

The Impact of CVE-2020-36407

The vulnerability could potentially allow an attacker to write beyond the bounds of allocated memory, leading to a crash or potential execution of arbitrary code.

Technical Details of CVE-2020-36407

libavif 0.8.0 and 0.8.1 are susceptible to an out-of-bounds write vulnerability.

Vulnerability Description

The vulnerability exists in the avifDecoderDataFillImageGrid function, allowing unauthorized write access beyond the allocated memory.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: 0.8.0 and 0.8.1

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious input that triggers the out-of-bounds write, potentially leading to a denial of service or arbitrary code execution.

Mitigation and Prevention

Immediate Steps to Take:

Update libavif to the latest version to patch the vulnerability.
Monitor official sources for security advisories related to libavif.

Long-Term Security Practices

Regularly update software and libraries to mitigate potential vulnerabilities.
Implement secure coding practices to prevent buffer overflows and memory corruption.

Patching and Updates

Ensure timely installation of security patches and updates provided by the libavif project to address known vulnerabilities.