CVE-2020-25663 : Security Advisory and Response

A vulnerability in ImageMagick prior to version 7.0.9-0 could allow an attacker to cause denial of service through a heap-use-after-free or heap-buffer-overflow READ.

Understanding CVE-2020-25663

This CVE involves a flaw in the SetImageAlphaChannel() routine of ImageMagick that could be exploited by submitting a malicious image file.

What is CVE-2020-25663?

The vulnerability arises from a call to ConformPixelInfo() in the routine, leading to memory corruption when specific functions are subsequently called.

The Impact of CVE-2020-25663

The vulnerability could result in denial of service if an attacker successfully submits a crafted image file for processing by ImageMagick.

Technical Details of CVE-2020-25663

ImageMagick versions prior to 7.0.9-0 are affected by this vulnerability.

Vulnerability Description

The flaw occurs due to a heap-use-after-free or heap-buffer-overflow READ triggered by specific function calls after ConformPixelInfo() in ImageMagick.

Affected Systems and Versions

Product: ImageMagick
Vendor: n/a
Versions Affected: prior to 7.0.9-0

Exploitation Mechanism

An attacker can exploit this vulnerability by submitting a specially crafted image file for processing by ImageMagick, leading to memory corruption.

Mitigation and Prevention

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

Immediate Steps to Take

Update ImageMagick to version 7.0.9-0 or later to mitigate the vulnerability.
Avoid processing untrusted image files using ImageMagick until the software is patched.

Long-Term Security Practices

Regularly update and patch software to ensure protection against known vulnerabilities.
Implement proper input validation mechanisms to prevent malicious inputs.

Patching and Updates

Apply patches and updates provided by ImageMagick to address this vulnerability and enhance overall system security.