CVE-2018-7638 : Security Advisory and Response
Learn about CVE-2018-7638, a heap-based buffer over-read vulnerability in CImg v.220 affecting the '256 colors' scenario. Find mitigation steps and necessary updates here.
A heap-based buffer over-read vulnerability has been identified in CImg v.220, specifically in the load_bmp function, affecting the '256 colors' scenario.
Understanding CVE-2018-7638
What is CVE-2018-7638?
An issue in CImg v.220 leads to a heap-based buffer over-read vulnerability when loading a manipulated bmp image, distinct from CVE-2018-7588.
The Impact of CVE-2018-7638
This vulnerability affects the '256 colors' scenario, also known as case 8, posing a risk when handling specific bmp images.
Technical Details of CVE-2018-7638
Vulnerability Description
The vulnerability exists in the load_bmp function of CImg.h, allowing a heap-based buffer over-read during the loading of manipulated bmp images.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability is triggered when loading a crafted bmp image, specifically in the '256 colors' scenario.
Mitigation and Prevention
Immediate Steps to Take
- Apply the latest security updates provided by the vendor
- Avoid loading manipulated bmp images from untrusted sources
Long-Term Security Practices
- Regularly update software and libraries to the latest versions
- Implement secure coding practices to prevent buffer over-read vulnerabilities
Patching and Updates
Ensure to install the security updates released by CImg to address the heap-based buffer over-read vulnerability.