CVE-2019-11598 : Security Advisory and Response

ImageMagick 7.0.8-40 Q16 has a vulnerability in the WritePNMImage function that can lead to a heap-based buffer over-read, potentially resulting in a denial of service or sensitive information disclosure.

Understanding CVE-2019-11598

This CVE involves a specific vulnerability in ImageMagick that attackers can exploit using a malicious image file.

What is CVE-2019-11598?

The vulnerability in the WritePNMImage function of ImageMagick 7.0.8-40 Q16 allows attackers to trigger a heap-based buffer over-read, which can have serious consequences like denial of service attacks or exposing sensitive data.

The Impact of CVE-2019-11598

The vulnerability can be exploited by attackers using a crafted image file, potentially leading to a denial of service or disclosure of sensitive information. It is closely related to the SetGrayscaleImage function in MagickCore/quantize.c.

Technical Details of CVE-2019-11598

ImageMagick 7.0.8-40 Q16 is affected by this vulnerability.

Vulnerability Description

The vulnerability in the WritePNMImage function allows for a heap-based buffer over-read, which attackers can exploit using a malicious image file.

Affected Systems and Versions

Product: ImageMagick
Vendor: N/A
Version: 7.0.8-40 Q16

Exploitation Mechanism

Attackers can exploit this vulnerability by using a crafted image file to trigger the heap-based buffer over-read, potentially causing a denial of service or information disclosure.

Mitigation and Prevention

It is crucial to take immediate steps to address and prevent the exploitation of this vulnerability.

Immediate Steps to Take

Update ImageMagick to a patched version that addresses the vulnerability.
Avoid opening image files from untrusted or unknown sources.
Monitor security advisories for any updates related to this vulnerability.

Long-Term Security Practices

Regularly update and patch software to mitigate known vulnerabilities.
Implement network security measures to detect and prevent malicious activities.
Conduct regular security assessments and audits to identify and address potential risks.

Patching and Updates

Ensure that ImageMagick is regularly updated with the latest security patches to prevent exploitation of this vulnerability.