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    CVE-2006-5873

    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.

    Published:Dec 12, 2006
    Last Modified:Apr 23, 2026
    EPS:Dec 12, 2006
    EPSS Score:0.01851
    CVSS Score:7.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    L2tpns
    Product
    L2tpns

    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://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://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
    https://exchange.xforce.ibmcloud.com/vulnerabilities/30732
    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://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
    https://exchange.xforce.ibmcloud.com/vulnerabilities/30732

    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