CVE-2017-11139 : Exploit Details and Defense Strategies

GraphicsMagick 1.3.26 has double free vulnerabilities in the ReadOneJNGImage() function in coders/png.c.

Understanding CVE-2017-11139

There are double free vulnerabilities present in the coders/png.c file within GraphicsMagick version 1.3.26, specifically in the ReadOneJNGImage() function.

What is CVE-2017-11139?

This CVE refers to double free vulnerabilities found in GraphicsMagick version 1.3.26 within the ReadOneJNGImage() function in the coders/png.c file.

The Impact of CVE-2017-11139

Attackers can exploit this vulnerability to execute arbitrary code or cause a denial of service (DoS) condition.
It may lead to a system crash or potential unauthorized access to sensitive information.

Technical Details of CVE-2017-11139

GraphicsMagick version 1.3.26 is affected by double free vulnerabilities in the ReadOneJNGImage() function.

Vulnerability Description

The vulnerability allows attackers to trigger a double free condition, potentially leading to code execution or DoS attacks.

Affected Systems and Versions

Affected Version: GraphicsMagick 1.3.26

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious JNG image file to trigger the double free condition.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks posed by CVE-2017-11139.

Immediate Steps to Take

Update GraphicsMagick to a non-vulnerable version.
Implement proper input validation to prevent malicious image files from being processed.

Long-Term Security Practices

Regularly update software and apply security patches promptly.
Conduct security audits and code reviews to identify and address vulnerabilities.

Patching and Updates

Apply patches provided by GraphicsMagick to address the double free vulnerabilities.