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CVE-2017-11166 Explained : Impact and Mitigation

Discover the impact of CVE-2017-11166, a memory leak vulnerability in ImageMagick version 7.0.5-6. Learn about affected systems, exploitation risks, and mitigation steps.

A memory leak vulnerability has been discovered in the ReadXWDImage function within the coders\xwd.c file of ImageMagick version 7.0.5-6. This vulnerability can potentially lead to memory exhaustion if an XWD file with a manipulated length field (indicating the number of color-map entries) is encountered.

Understanding CVE-2017-11166

The ReadXWDImage function in coders\xwd.c in ImageMagick 7.0.5-6 has a memory leak vulnerability that can cause memory exhaustion via a crafted length (number of color-map entries) field in the header of an XWD file.

What is CVE-2017-11166?

This CVE refers to a memory leak vulnerability in ImageMagick version 7.0.5-6 that can result in memory exhaustion when processing XWD files with manipulated length fields.

The Impact of CVE-2017-11166

The vulnerability could be exploited by an attacker to exhaust memory resources on systems running the affected ImageMagick version, potentially leading to denial of service or system instability.

Technical Details of CVE-2017-11166

The technical details of the CVE include:

Vulnerability Description

The vulnerability exists in the ReadXWDImage function within the coders\xwd.c file of ImageMagick version 7.0.5-6, allowing for a memory leak when processing XWD files with manipulated length fields.

Affected Systems and Versions

        Affected Version: ImageMagick 7.0.5-6
        Systems running this specific version are vulnerable to the memory leak issue.

Exploitation Mechanism

        Exploiting a crafted length field in the header of an XWD file can trigger the memory leak vulnerability, potentially leading to memory exhaustion.

Mitigation and Prevention

To address CVE-2017-11166, consider the following mitigation strategies:

Immediate Steps to Take

        Update ImageMagick to a non-vulnerable version.
        Avoid opening XWD files from untrusted sources.

Long-Term Security Practices

        Regularly monitor for security updates and patches for ImageMagick.
        Implement file type and content validation mechanisms to detect malicious XWD files.

Patching and Updates

        Apply patches provided by ImageMagick to fix the memory leak vulnerability.

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