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    CVE-2015-7974

    NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."

    Published:Jan 20, 2016
    Last Modified:Apr 12, 2025
    EPS:Jan 26, 2016
    EPSS Score:0.03667
    CVSS Score:7.7

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Netapp
    Product
    Clustered Data Ontap
    Vendor
    Netapp
    Product
    Oncommand Balance
    Vendor
    Ntp
    Product
    Ntp
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Siemens
    Product
    Tim 4r-ie
    Vendor
    Siemens
    Product
    Tim 4r-ie Dnp3
    Vendor
    Siemens
    Product
    Tim 4r-ie Dnp3 Firmware
    Vendor
    Siemens
    Product
    Tim 4r-ie Firmware

    Exploits

    http://www.talosintel.com/reports/TALOS-2016-0071/http://www.talosintel.com/reports/TALOS-2016-0071/

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    References

    http://bugs.ntp.org/show_bug.cgi?id=2936
    http://rhn.redhat.com/errata/RHSA-2016-2583.html
    http://support.ntp.org/bin/view/Main/NtpBug2936
    http://www.debian.org/security/2016/dsa-3629
    http://www.securityfocus.com/bid/81960
    http://www.securitytracker.com/id/1034782
    http://www.talosintel.com/reports/TALOS-2016-0071/
    https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us
    https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc
    https://security.gentoo.org/glsa/201607-15
    https://security.netapp.com/advisory/ntap-20171031-0001/
    https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11
    http://bugs.ntp.org/show_bug.cgi?id=2936
    http://rhn.redhat.com/errata/RHSA-2016-2583.html
    http://support.ntp.org/bin/view/Main/NtpBug2936
    http://www.debian.org/security/2016/dsa-3629
    http://www.securityfocus.com/bid/81960
    http://www.securitytracker.com/id/1034782
    http://www.talosintel.com/reports/TALOS-2016-0071/
    https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us
    https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us
    https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc
    https://security.gentoo.org/glsa/201607-15
    https://security.netapp.com/advisory/ntap-20171031-0001/
    https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11

    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