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CVE-2017-12937 : Vulnerability Insights and Analysis

Learn about CVE-2017-12937 affecting GraphicsMagick version 1.3.26. Discover the impact, technical details, and mitigation steps for this colormap heap-based buffer over-read vulnerability.

GraphicsMagick version 1.3.26 is affected by a colormap heap-based buffer over-read issue in the ReadSUNImage function.

Understanding CVE-2017-12937

What is CVE-2017-12937?

The vulnerability is located in the sun.c file of GraphicsMagick version 1.3.26, specifically in the ReadSUNImage function. It allows for a heap-based buffer over-read.

The Impact of CVE-2017-12937

This vulnerability could be exploited by an attacker to read sensitive information from the heap, potentially leading to information disclosure or further attacks.

Technical Details of CVE-2017-12937

Vulnerability Description

The ReadSUNImage function in coders/sun.c in GraphicsMagick 1.3.26 has a colormap heap-based buffer over-read.

Affected Systems and Versions

        Product: GraphicsMagick
        Vendor: N/A
        Version: 1.3.26

Exploitation Mechanism

The vulnerability can be exploited by manipulating the colormap heap to read beyond its allocated memory space.

Mitigation and Prevention

Immediate Steps to Take

        Apply the patches provided by GraphicsMagick to address the vulnerability.
        Monitor vendor advisories for any updates or security patches.

Long-Term Security Practices

        Regularly update and patch software to prevent known vulnerabilities.
        Implement proper input validation and boundary checks in code to mitigate buffer over-read issues.

Patching and Updates

Ensure that the affected GraphicsMagick version is updated to a patched version to eliminate the colormap heap-based buffer over-read vulnerability.

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