CVE-2011-4868

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    CVE-2011-4868

    Published: 15 Jan 2012Last Modified: 10 Apr 2026

    Summary:

    Details: The logging functionality in dhcpd in ISC DHCP before 4.2.3-P2, when using Dynamic DNS (DDNS) and issuing IPv6 addresses, does not properly handle the DHCPv6 lease structure, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets related to a lease-status update.

    References: http://security.gentoo.org/glsa/glsa-201301-06.xml, https://www.isc.org/software/dhcp/advisories/cve-2011-4868, https://deepthought.isc.org/article/AA-00595, https://kb.isc.org/article/AA-00705

    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