CVE-2006-1646

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2006-04-06 · updated 2026-06-16

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.

Affected products

Internet Key Exchange: 1

References

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

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