CVE-2018-16643 : Security Advisory and Response

ImageMagick 7.0.8-4 software is vulnerable to denial of service attacks due to improper validation in certain functions.

Understanding CVE-2018-16643

This CVE identifies a vulnerability in ImageMagick 7.0.8-4 that could be exploited by attackers to cause denial of service.

What is CVE-2018-16643?

The functions ReadDCMImage, ReadPWPImage, ReadCALSImage, and ReadPICTImage in ImageMagick 7.0.8-4 do not properly validate the return value of the fputc function, allowing attackers to trigger a denial of service by providing a malicious image file.

The Impact of CVE-2018-16643

Attackers can exploit this vulnerability to disrupt services by supplying a crafted image file.

Technical Details of CVE-2018-16643

ImageMagick 7.0.8-4 vulnerability details.

Vulnerability Description

The vulnerability lies in the ReadDCMImage, ReadPWPImage, ReadCALSImage, and ReadPICTImage functions within ImageMagick 7.0.8-4, where the return value of the fputc function is not properly validated.

Affected Systems and Versions

ImageMagick 7.0.8-4 software

Exploitation Mechanism

Attackers can exploit this vulnerability by providing a malicious image file to trigger a denial of service.

Mitigation and Prevention

Protect your systems from CVE-2018-16643.

Immediate Steps to Take

Update ImageMagick to a patched version.
Implement network security measures to prevent malicious file uploads.

Long-Term Security Practices

Regularly update software and apply security patches.
Conduct security audits to identify and mitigate vulnerabilities.

Patching and Updates

Apply the latest security updates and patches provided by ImageMagick.