CVE-2023-45664 : Exploit Details and Defense Strategies

A detailed overview of CVE-2023-45664 focusing on the double-free vulnerability in stb_image library.

Understanding CVE-2023-45664

This section delves into the vulnerability, impact, affected systems, and mitigation strategies related to CVE-2023-45664.

What is CVE-2023-45664?

stb_image is a single file MIT licensed library used for processing images. The vulnerability occurs when a crafted image file triggers the

stbi__load_gif_main_outofmem

function to attempt a double-free of memory. This exploit can potentially lead to code execution, especially in a multi-threaded environment.

The Impact of CVE-2023-45664

The consequences of this vulnerability can be severe, potentially allowing attackers to execute arbitrary code by manipulating image files, leading to system compromise.

Technical Details of CVE-2023-45664

This section outlines the specific technical details of the CVE, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

The issue arises in

stbi__load_gif_main

due to the behavior when the

layers * stride

value is zero, causing a double-free memory attempt. This vulnerability can be exploited in a multi-threaded environment, posing a severe risk to system security.

Affected Systems and Versions

The vulnerability affects the

stb

product versions up to

2.28

, posing a risk to systems utilizing this specific version of the stb_image library.

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting malicious image files that trigger the double-free attempt, potentially leading to unauthorized code execution and system compromise.

Mitigation and Prevention

In this final section, we discuss immediate steps to take and long-term security practices to prevent exploitation of CVE-2023-45664 and ensure system safety.

Immediate Steps to Take

It is crucial to update the stb_image library to a secure version beyond

2.28

and avoid processing untrusted or malicious image files to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing secure coding practices, regular security audits, and maintaining updated software libraries can enhance the overall security posture and prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates from the stb_image library maintainers and promptly apply patches to address known vulnerabilities and enhance system security.