Multiple unspecified vulnerabilities in the Internet Key Exchange version 1 (IKEv1) implementation in HP HP-UX B.11.00 B.11.11 and B.11.23 running IPSec HP Jetdirect 635n IPv6/IPsec Print Server and HP Tru64 UNIX 5.1B-3 and 5.1B-2/PK4 allow remote attackers to cause a denial of service via certain IKE packets as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1. NOTE: due to the lack of details in the HP advisory it is unclear which of CVE-2005-3666 CVE-2005-3667 and/or CVE-2005-3668 this issue applies to.