CVE-2019-13568 : Security Advisory and Response

A heap-based buffer overflow vulnerability was found in CImg versions up to 2.6.7, specifically in the _load_bmp function in CImg.h. This flaw is triggered by incorrect memory allocation when processing a malformed BMP image.

Understanding CVE-2019-13568

This CVE identifies a critical security issue in the CImg library.

What is CVE-2019-13568?

The vulnerability in CImg up to version 2.6.7 allows attackers to exploit a heap-based buffer overflow in the _load_bmp function due to improper memory allocation for malformed BMP images.

The Impact of CVE-2019-13568

The heap-based buffer overflow in CImg could lead to potential remote code execution, denial of service, or other malicious activities by attackers exploiting the vulnerability.

Technical Details of CVE-2019-13568

This section delves into the technical aspects of the CVE.

Vulnerability Description

The vulnerability arises from erroneous memory allocation in the _load_bmp function in CImg.h when processing a malformed BMP image, leading to a heap-based buffer overflow.

Affected Systems and Versions

Product: CImg
Vendor: N/A
Versions affected: Up to 2.6.7

Exploitation Mechanism

The vulnerability can be exploited by crafting a specially designed BMP image to trigger the heap-based buffer overflow in the _load_bmp function of CImg.

Mitigation and Prevention

Protecting systems from CVE-2019-13568 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update CImg to the latest version to patch the vulnerability.
Avoid opening BMP images from untrusted or unknown sources.

Long-Term Security Practices

Regularly update software and libraries to mitigate potential vulnerabilities.
Implement network security measures to detect and block malicious activities.

Patching and Updates

Ensure timely installation of security patches and updates for CImg to address the heap-based buffer overflow vulnerability.