CVE-2020-27763 : Security Advisory and Response
Learn about CVE-2020-27763 affecting ImageMagick, leading to undefined behavior through math division by zero. Find mitigation steps and affected versions here.
A flaw in ImageMagick could lead to undefined behavior due to math division by zero, impacting application availability.
Understanding CVE-2020-27763
What is CVE-2020-27763?
ImageMagick in MagickCore/resize.c is vulnerable to triggering undefined behavior through a crafted file, potentially causing various issues.
The Impact of CVE-2020-27763
The vulnerability could affect application availability and lead to other problems related to undefined behavior.
Technical Details of CVE-2020-27763
Vulnerability Description
The flaw in ImageMagick versions prior to 7.0.8-68 allows attackers to exploit math division by zero.
Affected Systems and Versions
- Vendor: n/a
- Product: ImageMagick
- Vulnerable Version: ImageMagick 7.0.8-68
Exploitation Mechanism
Attackers can exploit the vulnerability by submitting a crafted file for processing by ImageMagick.
Mitigation and Prevention
Immediate Steps to Take
- Update ImageMagick to version 7.0.8-68 or later.
- Monitor for any unusual behavior in ImageMagick processing.
Long-Term Security Practices
- Regularly update ImageMagick to the latest version.
- Implement file input validation to prevent crafted files from triggering vulnerabilities.
Patching and Updates
Apply security updates provided by ImageMagick to patch the vulnerability.