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CVE-2019-13306 Explained : Impact and Mitigation

Learn about CVE-2019-13306, a stack-based buffer overflow vulnerability in ImageMagick 7.0.8-50 Q16 that allows attackers to execute arbitrary code or cause denial of service. Find mitigation steps and update recommendations here.

ImageMagick 7.0.8-50 Q16 has encountered a stack-based buffer overflow issue in the pnm.c file within the coders directory due to off-by-one errors.

Understanding CVE-2019-13306

What is CVE-2019-13306?

CVE-2019-13306 is a vulnerability in ImageMagick version 7.0.8-50 Q16 that leads to a stack-based buffer overflow in the pnm.c file.

The Impact of CVE-2019-13306

This vulnerability can be exploited to execute arbitrary code or cause a denial of service by crashing the application.

Technical Details of CVE-2019-13306

Vulnerability Description

The issue arises from off-by-one errors in the WritePNMImage function in coders/pnm.c, resulting in a stack-based buffer overflow.

Affected Systems and Versions

        Product: ImageMagick
        Version: 7.0.8-50 Q16

Exploitation Mechanism

Attackers can exploit this vulnerability by crafting a malicious image file that triggers the buffer overflow when processed by ImageMagick.

Mitigation and Prevention

Immediate Steps to Take

        Update ImageMagick to a patched version that addresses the buffer overflow issue.
        Avoid processing untrusted image files with ImageMagick until the patch is applied.

Long-Term Security Practices

        Regularly update software and apply security patches promptly.
        Implement proper input validation and boundary checks in image processing applications.

Patching and Updates

Ensure that ImageMagick is updated to a version that includes the fix for the stack-based buffer overflow vulnerability.

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