CVE-2006-5873

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    CVE-2006-5873

    Published: 12 Dec 2006Last Modified: 10 Apr 2026

    Summary:

    Details: Buffer overflow in the cluster_process_heartbeat function in cluster.c in layer 2 tunneling protocol network server (l2tpns) before 2.1.21 allows remote attackers to cause a denial of service via a large heartbeat packet.

    References: http://secunia.com/advisories/23230, http://secunia.com/advisories/23333, http://sourceforge.net/project/shownotes.php?group_id=97282&release_id=468202, http://www.debian.org/security/2006/dsa-1230, http://www.securityfocus.com/bid/21443, http://www.vupen.com/english/advisories/2006/4860, http://l2tpns.cvs.sourceforge.net/l2tpns/l2tpns/cluster.c?r1=1.53&r2=1.54, http://secunia.com/advisories/23230, http://secunia.com/advisories/23333, http://www.debian.org/security/2006/dsa-1230, https://exchange.xforce.ibmcloud.com/vulnerabilities/30732

    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