CVE-2018-7443 : Security Advisory and Response
Learn about CVE-2018-7443 affecting ImageMagick version 7.0.7-23 Q16. Find out how remote attackers can exploit this vulnerability to trigger a denial of service and steps to prevent it.
ImageMagick version 7.0.7-23 Q16 is vulnerable to a denial of service attack due to improper validation of image data size in the ReadTIFFImage function.
Understanding CVE-2018-7443
What is CVE-2018-7443?
The vulnerability in the tiff.c file of ImageMagick allows remote attackers to trigger a denial of service by causing a memory allocation failure.
The Impact of CVE-2018-7443
The vulnerability can be exploited remotely to cause a denial of service by triggering a memory allocation failure in the AcquireMagickMemory function.
Technical Details of CVE-2018-7443
Vulnerability Description
The ReadTIFFImage function in ImageMagick 7.0.7-23 Q16 fails to validate image data size properly, leading to a denial of service.
Affected Systems and Versions
- Product: ImageMagick
- Vendor: N/A
- Version: 7.0.7-23 Q16
Exploitation Mechanism
Remote attackers can exploit this vulnerability to cause a denial of service by inducing a memory allocation failure.
Mitigation and Prevention
Immediate Steps to Take
- Apply security updates provided by ImageMagick promptly.
- Implement network security measures to prevent remote exploitation.
Long-Term Security Practices
- Regularly update and patch ImageMagick and related software.
- Conduct security assessments and audits to identify vulnerabilities.
Patching and Updates
Ensure that the latest security patches and updates for ImageMagick are installed to mitigate the risk of exploitation.