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    CVE-2005-3671

    The Internet Key Exchange version 1 (IKEv1) implementation in Openswan 2 (openswan-2) before 2.4.4, and freeswan in SUSE LINUX 9.1 before 2.04_1.5.4-1.23, allow remote attackers to cause a denial of service via (1) a crafted packet using 3DES with an invalid key length, or (2) unspecified inputs when Aggressive Mode is enabled and the PSK is known, as demonstrated by the PROTOS ISAKMP Test Suite for IKEv1.

    Published:Nov 18, 2005
    Last Modified:Apr 16, 2026
    EPS:Nov 18, 2005
    EPSS Score:0.06721
    CVSS Score:7.8

    Affected Products

    Vendor
    Frees Wan
    Product
    Frees Wan
    Vendor
    Openswan
    Product
    Openswan
    Vendor
    Xelerance
    Product
    Openswan

    Exploits

    http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    References

    http://archives.neohapsis.com/archives/bugtraq/2005-12/0138.html
    http://archives.neohapsis.com/archives/bugtraq/2005-12/0161.html
    http://jvn.jp/niscc/NISCC-273756/index.html
    http://secunia.com/advisories/17581
    http://secunia.com/advisories/17680
    http://secunia.com/advisories/17980
    http://secunia.com/advisories/18115
    http://securitytracker.com/id?1015214
    http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/
    http://www.gentoo.org/security/en/glsa/glsa-200512-04.xml
    http://www.kb.cert.org/vuls/id/226364
    http://www.niscc.gov.uk/niscc/docs/re-20051114-01014.pdf?lang=en
    http://www.novell.com/linux/security/advisories/2005_70_ipsec.html
    http://www.openswan.org/niscc2/
    http://www.redhat.com/archives/fedora-announce-list/2005-November/msg00057.html
    http://www.redhat.com/archives/fedora-announce-list/2005-November/msg00058.html
    http://www.securityfocus.com/bid/15416
    http://archives.neohapsis.com/archives/bugtraq/2005-12/0138.html
    http://archives.neohapsis.com/archives/bugtraq/2005-12/0161.html
    http://jvn.jp/niscc/NISCC-273756/index.html
    http://secunia.com/advisories/17581
    http://secunia.com/advisories/17680
    http://secunia.com/advisories/17980
    http://secunia.com/advisories/18115
    http://securitytracker.com/id?1015214
    http://www.ee.oulu.fi/research/ouspg/protos/testing/c09/isakmp/
    http://www.gentoo.org/security/en/glsa/glsa-200512-04.xml
    http://www.kb.cert.org/vuls/id/226364
    http://www.niscc.gov.uk/niscc/docs/re-20051114-01014.pdf?lang=en
    http://www.novell.com/linux/security/advisories/2005_70_ipsec.html
    http://www.openswan.org/niscc2/
    http://www.redhat.com/archives/fedora-announce-list/2005-November/msg00057.html
    http://www.redhat.com/archives/fedora-announce-list/2005-November/msg00058.html
    http://www.securityfocus.com/bid/15416

    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