CVE-2015-7691

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    CVE-2015-7691

    Published: 7 Aug 2017Last Modified: 16 Apr 2026

    Summary:

    Details: The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted packets containing particular autokey operations. NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.

    References: http://rhn.redhat.com/errata/RHSA-2016-0780.html, http://rhn.redhat.com/errata/RHSA-2016-2583.html, http://support.ntp.org/bin/view/Main/NtpBug2899, http://www.debian.org/security/2015/dsa-3388, http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html, http://www.securityfocus.com/bid/77274, http://www.securitytracker.com/id/1033951, https://bugzilla.redhat.com/show_bug.cgi?id=1274254, https://security.gentoo.org/glsa/201607-15, https://security.netapp.com/advisory/ntap-20171004-0001/, https://bugzilla.redhat.com/show_bug.cgi?id=1274254

    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