CVE-2020-27751 Explained : Impact and Mitigation

A flaw in ImageMagick could lead to undefined behavior and potential application availability impact.

Understanding CVE-2020-27751

What is CVE-2020-27751?

ImageMagick in MagickCore/quantum-export.c is vulnerable to triggering undefined behavior due to crafted files, potentially causing issues related to values outside the range of type

unsigned long long

and large shift exponents.

The Impact of CVE-2020-27751

This vulnerability could affect application availability and lead to various problems related to undefined behavior.

Technical Details of CVE-2020-27751

Vulnerability Description

The flaw in ImageMagick versions prior to 7.0.9-0 allows attackers to trigger undefined behavior.

Affected Systems and Versions

Vendor: n/a
Product: ImageMagick
Affected Versions: prior to 7.0.9-0

Exploitation Mechanism

Attackers can exploit this vulnerability by submitting crafted files for processing by ImageMagick.

Mitigation and Prevention

Immediate Steps to Take

Update ImageMagick to version 7.0.9-0 or later.
Monitor for any unusual behavior in ImageMagick processing.

Long-Term Security Practices

Regularly update software to the latest versions.
Implement file input validation to prevent crafted file exploitation.

Patching and Updates

Apply security updates provided by ImageMagick to patch this vulnerability.