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    CVE-2006-3906

    Internet Key Exchange (IKE) version 1 protocol, as implemented on Cisco IOS, VPN 3000 Concentrators, and PIX firewalls, allows remote attackers to cause a denial of service (resource exhaustion) via a flood of IKE Phase-1 packets that exceed the session expiration rate. NOTE: it has been argued that this is due to a design weakness of the IKE version 1 protocol, in which case other vendors and implementations would also be affected.

    Published:Jul 27, 2006
    Last Modified:Apr 16, 2026
    EPS:Jul 27, 2006
    EPSS Score:0.04277
    CVSS Score:5

    Affected Products

    Vendor
    Cisco
    Product
    Adaptive Security Appliance Software
    Vendor
    Cisco
    Product
    Ios
    Vendor
    Cisco
    Product
    Pix Asa Ids
    Vendor
    Cisco
    Product
    Pix Firewall
    Vendor
    Cisco
    Product
    Pix Firewall 501
    Vendor
    Cisco
    Product
    Pix Firewall 506
    Vendor
    Cisco
    Product
    Pix Firewall 515
    Vendor
    Cisco
    Product
    Pix Firewall 515e
    Vendor
    Cisco
    Product
    Pix Firewall 520
    Vendor
    Cisco
    Product
    Pix Firewall 525
    Vendor
    Cisco
    Product
    Pix Firewall 535
    Vendor
    Cisco
    Product
    Pix Firewall Software
    Vendor
    Cisco
    Product
    Secure Pix Firewall
    Vendor
    Cisco
    Product
    Vpn 3000 Concentrator Series Software
    Vendor
    Cisco
    Product
    Vpn 3001 Concentrator
    Vendor
    Cisco
    Product
    Vpn 3005 Concentrator Software
    Vendor
    Cisco
    Product
    Vpn 3015 Concentrator
    Vendor
    Cisco
    Product
    Vpn 3020 Concentrator
    Vendor
    Cisco
    Product
    Vpn 3030 Concentator
    Vendor
    Cisco
    Product
    Vpn 3060 Concentrator
    Vendor
    Cisco
    Product
    Vpn 3080 Concentrator

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    References

    http://archives.neohapsis.com/archives/bugtraq/2006-07/0531.html
    http://securityreason.com/securityalert/1293
    http://securitytracker.com/id?1016582
    http://www.cisco.com/en/US/tech/tk583/tk372/tsd_technology_security_response09186a00806f33d4.html
    http://www.nta-monitor.com/posts/2006/07/cisco-concentrator-dos.html
    http://www.osvdb.org/29068
    http://www.securityfocus.com/archive/1/441203/100/0/threaded
    http://www.securityfocus.com/bid/19176
    https://exchange.xforce.ibmcloud.com/vulnerabilities/27972
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5299
    http://archives.neohapsis.com/archives/bugtraq/2006-07/0531.html
    http://securityreason.com/securityalert/1293
    http://securitytracker.com/id?1016582
    http://www.cisco.com/en/US/tech/tk583/tk372/tsd_technology_security_response09186a00806f33d4.html
    http://www.nta-monitor.com/posts/2006/07/cisco-concentrator-dos.html
    http://www.osvdb.org/29068
    http://www.securityfocus.com/archive/1/441203/100/0/threaded
    http://www.securityfocus.com/bid/19176
    https://exchange.xforce.ibmcloud.com/vulnerabilities/27972
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5299

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High