CVE-2020-27776 Explained : Impact and Mitigation
Learn about CVE-2020-27776 affecting ImageMagick versions prior to 7.0.9-0, leading to undefined behavior and potential application availability issues. Find mitigation steps here.
A flaw in ImageMagick could lead to undefined behavior and impact application availability.
Understanding CVE-2020-27776
What is CVE-2020-27776?
ImageMagick in MagickCore/statistic.c is vulnerable to triggering undefined behavior due to crafted files, potentially affecting application availability.
The Impact of CVE-2020-27776
The flaw could result in values outside the range of type unsigned long, impacting application availability and potentially causing other issues related to undefined behavior.
Technical Details of CVE-2020-27776
Vulnerability Description
The vulnerability in ImageMagick versions prior to 7.0.9-0 allows attackers to exploit the flaw by submitting crafted files.
Affected Systems and Versions
- Vendor: n/a
- Product: ImageMagick
- Affected Version: ImageMagick 7.0.9-0
Exploitation Mechanism
Attackers can exploit this vulnerability by submitting specially crafted files to ImageMagick, triggering undefined behavior.
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 the submission of crafted files.
Patching and Updates
Ensure timely patching of ImageMagick to the latest version to mitigate the vulnerability.