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
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
Long-Term Security Practices
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.