CVE-2020-27760 : What You Need to Know

CVE-2020-27760, assigned by Red Hat, involves a vulnerability in ImageMagick that could lead to a divide-by-zero condition, impacting application availability.

Understanding CVE-2020-27760

This CVE identifies a flaw in ImageMagick versions prior to 7.0.8-68 that could be exploited to trigger a divide-by-zero condition.

What is CVE-2020-27760?

The vulnerability lies in the

GammaImage()

function in

enhance.c

of ImageMagick, where a crafted input file can cause a divide-by-zero condition based on the

gamma

value.

The Impact of CVE-2020-27760

The exploit could potentially impact application availability due to the divide-by-zero condition triggered during image processing.

Technical Details of CVE-2020-27760

ImageMagick versions prior to 7.0.8-68 are affected by this vulnerability.

Vulnerability Description

The flaw in

GammaImage()

can lead to a divide-by-zero condition when processing a specially crafted input file.

Affected Systems and Versions

Vendor: n/a
Product: ImageMagick
Affected Version: ImageMagick 7.0.8-68

Exploitation Mechanism

Crafted input files can exploit the

gamma

value in

GammaImage()

to trigger the divide-by-zero condition.

Mitigation and Prevention

Immediate action and long-term security practices are crucial to mitigate the risks associated with CVE-2020-27760.

Immediate Steps to Take

Apply the patch provided by ImageMagick to prevent the divide-by-zero condition.
Regularly update ImageMagick to the latest version to ensure security.

Long-Term Security Practices

Implement secure coding practices to prevent similar vulnerabilities.
Conduct regular security assessments and audits to identify and address potential risks.

Patching and Updates

Install the security update released by ImageMagick to address the vulnerability.