CVE-2019-13391 Explained : Impact and Mitigation
Learn about CVE-2019-13391 affecting ImageMagick version 7.0.8-50 Q16 due to a heap-based buffer over-read issue. Find out the impact, affected systems, exploitation method, and mitigation steps.
ImageMagick version 7.0.8-50 Q16 is affected by a heap-based buffer over-read vulnerability due to incorrect usage of GetCacheViewVirtualPixels in ComplexImages located in MagickCore/fourier.c.
Understanding CVE-2019-13391
What is CVE-2019-13391?
In ImageMagick 7.0.8-50 Q16, the vulnerability arises from incorrect calls to GetCacheViewVirtualPixels in ComplexImages in MagickCore/fourier.c, leading to a heap-based buffer over-read.
The Impact of CVE-2019-13391
This vulnerability could be exploited by an attacker to execute arbitrary code or cause a denial of service by crashing the application.
Technical Details of CVE-2019-13391
Vulnerability Description
The issue in ImageMagick version 7.0.8-50 Q16 allows a heap-based buffer over-read due to improper usage of GetCacheViewVirtualPixels in ComplexImages in MagickCore/fourier.c.
Affected Systems and Versions
- Product: ImageMagick
- Vendor: ImageMagick
- Versions: 7.0.8-50 Q16
Exploitation Mechanism
The vulnerability can be exploited by crafting a malicious image file and convincing a user to process it using the affected version of ImageMagick.
Mitigation and Prevention
Immediate Steps to Take
- Update ImageMagick to a patched version.
- Avoid processing untrusted image files.
- Implement proper input validation mechanisms.
Long-Term Security Practices
- Regularly update software and apply security patches.
- Conduct security training for users on identifying and handling suspicious files.
Patching and Updates
Ensure that ImageMagick is regularly updated to the latest version to mitigate the vulnerability.