CVE-2019-7636 Explained : Impact and Mitigation

A heap-based buffer over-read vulnerability has been identified in SDL (Simple DirectMedia Layer) versions 1.2.15 and 2.x through 2.0.9. This flaw resides in the SDL_GetRGB function within the video/SDL_pixels.c module.

Understanding CVE-2019-7636

What is CVE-2019-7636?

The CVE-2019-7636 vulnerability is a heap-based buffer over-read issue found in SDL versions 1.2.15 and 2.x through 2.0.9, specifically within the SDL_GetRGB function in the video/SDL_pixels.c module.

The Impact of CVE-2019-7636

This vulnerability could allow an attacker to read beyond the allocated memory, potentially leading to information disclosure or a denial of service (DoS) condition.

Technical Details of CVE-2019-7636

Vulnerability Description

The vulnerability is a heap-based buffer over-read issue in SDL versions 1.2.15 and 2.x through 2.0.9, specifically within the SDL_GetRGB function in the video/SDL_pixels.c module.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions: All versions are affected

Exploitation Mechanism

The vulnerability can be exploited by a remote attacker sending a specially crafted request to the affected system, triggering the buffer over-read.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest security updates provided by the SDL project.
Monitor SDL advisories and security mailing lists for any patches or workarounds.

Long-Term Security Practices

Regularly update SDL and other software dependencies to mitigate known vulnerabilities.
Implement network security measures to prevent unauthorized access to vulnerable systems.

Patching and Updates

Update SDL to the latest patched versions to address the heap-based buffer over-read vulnerability.