CVE-2017-12936 Explained : Impact and Mitigation

GraphicsMagick version 1.3.26 contains a use-after-free vulnerability in the ReadWMFImage function present in the wmf.c file. This vulnerability pertains to data associated with exception reporting.

Understanding CVE-2017-12936

GraphicsMagick version 1.3.26 has a critical use-after-free vulnerability in the ReadWMFImage function.

What is CVE-2017-12936?

The vulnerability in GraphicsMagick version 1.3.26 allows attackers to exploit a use-after-free issue in the ReadWMFImage function, potentially leading to arbitrary code execution or denial of service.

The Impact of CVE-2017-12936

This vulnerability could be exploited by malicious actors to execute arbitrary code or cause a denial of service on systems running the affected version of GraphicsMagick.

Technical Details of CVE-2017-12936

GraphicsMagick version 1.3.26 is susceptible to a use-after-free vulnerability in the ReadWMFImage function.

Vulnerability Description

The ReadWMFImage function in coders/wmf.c in GraphicsMagick 1.3.26 has a use-after-free issue for data associated with exception reporting.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Version: 1.3.26

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious WMF image file and tricking a user or system into processing it with the vulnerable GraphicsMagick version.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2017-12936.

Immediate Steps to Take

Update GraphicsMagick to a non-vulnerable version if available.
Implement proper input validation mechanisms to prevent the processing of malicious image files.
Monitor security advisories for patches and updates.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security assessments and penetration testing to identify and address vulnerabilities.

Patching and Updates

Apply patches provided by GraphicsMagick or the respective distribution to address the vulnerability.