CVE-2021-40211 Explained : Impact and Mitigation

This CVE record pertains to an issue with ImageMagick 7.1.0-4 involving division by zero in the function ReadEnhMetaFile of coders/emf.c.

Understanding CVE-2021-40211

ImageMagick version 7.1.0-4 has a vulnerability leading to a division by zero error in the function ReadEnhMetaFile of coders/emf.c.

What is CVE-2021-40211?

CVE-2021-40211 highlights a specific flaw in ImageMagick 7.1.0-4, leading to a division by zero within the mentioned function.

The Impact of CVE-2021-40211

The vulnerability could potentially result in denial of service (DoS) if successfully exploited.

Technical Details of CVE-2021-40211

The technical aspects of this CVE are as follows:

Vulnerability Description

The vulnerability involves division by zero in the ReadEnhMetaFile function in coders/emf.c within ImageMagick 7.1.0-4.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: ImageMagick 7.1.0-4

Exploitation Mechanism

The vulnerability can be exploited by causing a division by zero error within the ReadEnhMetaFile function.

Mitigation and Prevention

When dealing with CVE-2021-40211, consider the following mitigation steps:

Immediate Steps to Take

Update ImageMagick to a patched version if available.
Implement proper input validation to prevent the triggering of the vulnerability.

Long-Term Security Practices

Regularly update software and libraries to the latest versions.
Conduct security assessments and audits to identify vulnerabilities proactively.

Patching and Updates

Apply patches provided by ImageMagick promptly to address the division by zero vulnerability.