CVE-2020-25693 : Security Advisory and Response

A flaw was found in CImg in versions prior to 2.9.3, leading to integer overflows and heap buffer overflows in load_pnm(), triggered by specially crafted input files.

Understanding CVE-2020-25693

This CVE identifies a vulnerability in CImg versions before 2.9.3 that can impact application availability and data integrity.

What is CVE-2020-25693?

The vulnerability in CImg versions before 2.9.3 allows for integer overflows and subsequent heap buffer overflows in load_pnm() when processing specific input files.

The Impact of CVE-2020-25693

The exploitation of this vulnerability can lead to a significant impact on the availability and integrity of applications utilizing CImg.

Technical Details of CVE-2020-25693

This section provides detailed technical information about the CVE.

Vulnerability Description

The flaw in CImg versions before 2.9.3 results in integer overflows and heap buffer overflows in load_pnm() due to specially crafted input files.

Affected Systems and Versions

Product: CImg
Vendor: n/a
Versions Affected: CImg versions before 2.9.3

Exploitation Mechanism

The vulnerability can be exploited by processing malicious input files using CImg, triggering integer overflows and subsequent heap buffer overflows.

Mitigation and Prevention

Protect your systems from CVE-2020-25693 with the following steps:

Immediate Steps to Take

Update CImg to version 2.9.3 or later to mitigate the vulnerability.
Implement proper input validation mechanisms to prevent the exploitation of integer overflows.

Long-Term Security Practices

Regularly monitor for security updates and patches for CImg.
Conduct security assessments and code reviews to identify and address potential vulnerabilities.

Patching and Updates

Ensure timely application of security patches and updates to CImg to address known vulnerabilities.