unauthorized deletion of IPsec SAs in isakmpd, still

1 Abstract For nearly 10 months a handful of OpenBSD-developers is trying to fix a plethora of payload handling flaws in isakmpd. On 2004/01/13 they released something like a final patch to a broader public. The patch protects against some specific attacks, but does not solve the problem. 2...

OpenBSD 3.x - ISAKMPD Security Association Piggyback Delete Payload Denial of Service

source: https://www.securityfocus.com/bid/10496/info It is reported that OpenBSD's isakmpd daemon is susceptible to a remote denial of service vulnerability. An attacker is able to delete security associations and policies from IPSec VPN's by sending a malformed UDP ISAKMP packet to a vulnerable...

OpenBSD 3.x - ISAKMPD Security Association Piggyback Delete Payload Denial of Service

OpenBSD 3.x - ISAKMPD Security Association Piggyback Delete Payload Denial of Service source: https://www.securityfocus.com/bid/10496/info It is reported that OpenBSD's isakmpd daemon is susceptible to a remote denial of service vulnerability. An attacker is able to delete security associations a...

Important: Red Hat Security Advisory: ipsec-tools security update

An updated ipsec-tools package that fixes vulnerabilities in racoon the ISAKMP daemon is now available. IPSEC uses strong cryptography to provide both authentication and encryption services. With versions of ipsec-tools prior to 0.2.3, it was possible for an attacker to cause unauthorized deletio...

ipsec-tools and iputils contain a remote DoS vulnerability

Background From http://ipsec-tools.sourceforge.n et/ "IPsec-Tools is a port of KAME's IPsec utilities to the Linux-2.6 IPsec implementation." iputils is a collection of network monitoring tools, including racoon, ping and ping6. Description When racoon receives an ISAKMP header, it allocates memo...

Cisco Security Notice: Cisco IPsec VPN Implementation Group Password Usage Vulnerability

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Notice: Cisco IPsec VPN Implementation Group Password Usage Vulnerability Revision 1.0 For Public Release 2004 April 15 1600 UTC GMT ---------------------------------------------------------------------- Contents Summary Details...

Cisco Security Advisory: Cisco IPSec VPN Services Module Malformed IKE Packet Vulnerability

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco IPSec VPN Services Module Malformed IKE Packet Vulnerability Revision 1.0 For Public Release 2004 April 8 at 1600 UTC GMT ---------------------------------------------------------------------- Contents Summary Affected...

Cisco IPSec VPN module IKE DoS

Device crashes on malformed IKE packet...

KAME Racoon IKE daemon fails to properly verify client RSA signatures

Overview The KAME Racoon IKE daemon fails to properly verify client RSA signatures when using Main or Aggressive Mode during a Phase 1 IKE exchange. Description Racoon is an IKE Key Management daemon that negotiates and configures a set of parameters for IPSec. When authenticating a peer in Phase...

Cisco IPSec Malformed IKE Packet Vulnerability

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Cisco IPSec VPNSM IKE Packet DoS (CSCed30113)

The remote router contains a version of IOS which has multiple flaws when dealing with malformed IKE packets. CISCO identifies this vulnerability as bug id CSCed30113 An attacker may use this flaw to render this router inoperable C Tenable Network Security include"compat.inc"; ifdescription...

ipsec-tools contains an X.509 certificates vulnerability.

Background From http://ipsec-tools.sourceforge.net/ : "IPsec-Tools is a port of KAME's IPsec utilities to the Linux-2.6 IPsec implementation." Description racoon a utility in the ipsec-tools package does not verify digital signatures on Phase1 packets. This means that anybody holding the correct...

CVE-2004-0219

isakmpd in OpenBSD 3.4 and earlier allows remote attackers to cause a denial of service crash via an ISAKMP packet with a malformed IPSEC SA payload, as demonstrated by the Striker ISAKMP Protocol Test Suite...

unauthorized deletion of IPsec (and ISAKMP) SAs in racoon

0 Preface Now that most bugs in isakmpd that allowed for unauthorized SA deletion are "fixed", it's time to release some information on racoon. By the way: About 5 months ago I tried to contact the KAME developers. 1 Description racoon, KAME's IKE daemon, contains some flaws, that allow for...

CVE-2003-1004

Cisco PIX firewall 6.2.x through 6.2.3, when configured as a VPN Client, allows remote attackers to cause a denial of service dropped IPSec tunnel connection via an IKE Phase I negotiation request to the outside interface of the firewall...

Re: multiple payload handling flaws in isakmpd, again

There is one important thing I forgot to mention. In isakmpd deleting an IPsec SA also means deleting the appropriate IPsec policy in almost any case. Take a look at pfkeyv2deletespi in pfkeyv2.c. It calls pfkeyv2disablesa, the policy eraser ;-, if the SA was not acquired through the kernel: if...

CVE-2003-1004

Cisco PIX firewall versions 6.2.x through 6.2.3, when configured as a VPN Client, are affected by CVE-2003-1004. A remote attacker can cause a denial of service (dropped IPSec tunnel) by sending an IKE Phase I negotiation request to the firewall’s outside interface. The connected sources consiste...

Cisco PIX multiple bugs

SNMPv3 message causes device to reboot. If device is configured as VPN client and another VPN client connects IPSec tunnel may be broken during IKE phase...

CVE-2003-0242

IPSec in Mac OS X before 10.2.6 does not properly handle certain incoming security policies that match by port, which could allow traffic that is not explicitly allowed by the policies...

CVE-2003-0258

Cisco VPN 3000 series concentrators and Cisco VPN 3002 Hardware Client 3.5.x through 4.0.REL, when enabling IPSec over TCP for a port on the concentrator, allow remote attackers to reach the private network without authentication...