CVE-2023-45662 : Vulnerability Insights and Analysis

This article provides detailed information about CVE-2023-45662, a multi-byte read heap buffer overflow vulnerability in stb_image library.

Understanding CVE-2023-45662

This section delves into the nature of CVE-2023-45662 and its implications.

What is CVE-2023-45662?

stb_image is a single-file MIT licensed library used for processing images. The vulnerability arises when specific conditions are met, allowing a crafted image file to trigger an out-of-bounds read, potentially leading to security compromises.

The Impact of CVE-2023-45662

The CVE-2023-45662 vulnerability poses a medium threat with a CVSS base score of 6.5, requiring low attack complexity and having a low availability impact.

Technical Details of CVE-2023-45662

This section delves into the technical aspects of the CVE-2023-45662 vulnerability.

Vulnerability Description

The vulnerability occurs in the stbi__vertical_flip function of the stb_image library due to a discrepancy in image dimensions calculation, leading to a heap buffer overflow.

Affected Systems and Versions

The vulnerability affects version <= 2.28 of the stb_image library.

Exploitation Mechanism

By manipulating the

stbi_set_flip_vertically_on_load

and

req_comp

parameters, an attacker can exploit the vulnerability to trigger an out-of-bounds read.

Mitigation and Prevention

This section outlines the steps to mitigate and prevent CVE-2023-45662.

Immediate Steps to Take

Users are advised to update the stb_image library to a non-vulnerable version and avoid processing untrusted image files.

Long-Term Security Practices

Developers should implement secure coding practices and regularly update libraries to prevent similar vulnerabilities.

Patching and Updates

Stay informed about security patches released by the stb_image library maintainers and apply them promptly to secure systems.