CVE-2018-19756 Explained : Impact and Mitigation

A denial of service vulnerability in libsixel 1.8.2 due to a heap-based buffer over-read in the stb_image.h function stbi__tga_load.

Understanding CVE-2018-19756

This CVE involves a vulnerability in libsixel 1.8.2 that can lead to a denial of service attack.

What is CVE-2018-19756?

The vulnerability in libsixel 1.8.2 results in a heap-based buffer over-read in the stb_image.h function stbi__tga_load, potentially allowing attackers to cause a denial of service.

The Impact of CVE-2018-19756

The vulnerability can be exploited by malicious actors to trigger a denial of service condition on systems running the affected version of libsixel 1.8.2.

Technical Details of CVE-2018-19756

This section provides technical details about the vulnerability.

Vulnerability Description

The issue lies in the stb_image.h function stbi__tga_load in libsixel 1.8.2, leading to a heap-based buffer over-read and enabling a denial of service attack.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: 1.8.2 (affected)

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious input to trigger the heap-based buffer over-read in the stb_image.h function.

Mitigation and Prevention

Protecting systems from CVE-2018-19756 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches or updates provided by the vendor to address the vulnerability.
Monitor for any unusual system behavior that could indicate a denial of service attack.

Long-Term Security Practices

Regularly update software and libraries to prevent known vulnerabilities.
Implement network security measures to detect and block malicious traffic.

Patching and Updates

Check for patches or updates released by libsixel to fix the heap-based buffer over-read vulnerability in version 1.8.2.