CVE-2009-0790

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    CVE-2009-0790

    Published: 1 Apr 2009Last Modified: 10 Apr 2026

    Summary:

    Details: The pluto IKE daemon in Openswan and Strongswan IPsec 2.6 before 2.6.21 and 2.4 before 2.4.14, and Strongswan 4.2 before 4.2.14 and 2.8 before 2.8.9, allows remote attackers to cause a denial of service (daemon crash and restart) via a crafted (1) R_U_THERE or (2) R_U_THERE_ACK Dead Peer Detection (DPD) IPsec IKE Notification message that triggers a NULL pointer dereference related to inconsistent ISAKMP state and the lack of a phase2 state association in DPD.

    References: http://download.strongswan.org/CHANGES4.txt, http://secunia.com/advisories/34472, http://secunia.com/advisories/34483, http://secunia.com/advisories/34494, http://secunia.com/advisories/34546, http://www.openswan.org/CVE-2009-0790/CVE-2009-0790.txt, http://www.vupen.com/english/advisories/2009/0886, http://www.debian.org/security/2009/dsa-1759, http://www.debian.org/security/2009/dsa-1760, http://www.securityfocus.com/bid/34296, http://lists.opensuse.org/opensuse-security-announce/2009-04/msg00010.html, http://www.redhat.com/support/errata/RHSA-2009-0402.html, http://www.securityfocus.com/archive/1/502270/100/0/threaded, http://www.securitytracker.com/id?1021949, http://www.securitytracker.com/id?1021950, https://exchange.xforce.ibmcloud.com/vulnerabilities/49523, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11171

    Affected packages

    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
    CVE-2009-0790 | CVE-DB