CVE-2018-7184

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    CVE-2018-7184

    Published: 6 Mar 2018Last Modified: 16 Apr 2026

    Summary:

    Details: ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.

    References: https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us, http://support.ntp.org/bin/view/Main/NtpBug3453, http://www.securityfocus.com/archive/1/541824/100/0/threaded, http://www.securityfocus.com/bid/103192, https://security.netapp.com/advisory/ntap-20180626-0001/, https://usn.ubuntu.com/3707-1/, http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html, https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc, https://security.gentoo.org/glsa/201805-12, https://www.synology.com/support/security/Synology_SA_18_13

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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-2018-7184 | CVE-DB