CVE-2019-19949 : Exploit Details and Defense Strategies

ImageMagick 7.0.8-43 Q16 has a vulnerability in the function WritePNGImage that may lead to a heap-based buffer over-read. This flaw is associated with Magick_png_write_raw_profile and LocaleNCompare.

Understanding CVE-2019-19949

This CVE involves a heap-based buffer over-read in ImageMagick 7.0.8-43 Q16, specifically in the WritePNGImage function of coders/png.c.

What is CVE-2019-19949?

The vulnerability in ImageMagick 7.0.8-43 Q16 can result in a heap-based buffer over-read due to issues in the functions Magick_png_write_raw_profile and LocaleNCompare.

The Impact of CVE-2019-19949

The vulnerability could potentially be exploited by attackers to cause a heap-based buffer over-read, leading to information exposure or a denial of service (DoS) condition.

Technical Details of CVE-2019-19949

ImageMagick 7.0.8-43 Q16 is affected by a heap-based buffer over-read in the WritePNGImage function.

Vulnerability Description

The vulnerability in ImageMagick 7.0.8-43 Q16 allows for a heap-based buffer over-read, primarily related to Magick_png_write_raw_profile and LocaleNCompare functions.

Affected Systems and Versions

Product: ImageMagick
Vendor: N/A
Version: 7.0.8-43 Q16

Exploitation Mechanism

Attackers can exploit this vulnerability to trigger a heap-based buffer over-read by manipulating certain parameters in the affected functions.

Mitigation and Prevention

To address CVE-2019-19949, consider the following steps:

Immediate Steps to Take

Apply security patches provided by ImageMagick promptly.
Monitor official sources for updates and advisories regarding this vulnerability.

Long-Term Security Practices

Regularly update ImageMagick and other software to the latest versions.
Implement network security measures to detect and prevent potential attacks.

Patching and Updates

ImageMagick has released security updates to address this vulnerability. Ensure you apply the latest patches to mitigate the risk of exploitation.