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    CVE-2015-7973

    NTP before 4.2.8p6 and 4.3.x before 4.3.90, when configured in broadcast mode, allows man-in-the-middle attackers to conduct replay attacks by sniffing the network.

    Published:Jan 20, 2016
    Last Modified:Apr 20, 2025
    EPS:Jan 30, 2017
    EPSS Score:0.04588
    CVSS Score:6.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Freebsd
    Product
    Freebsd
    Vendor
    Netapp
    Product
    Clustered Data Ontap
    Vendor
    Netapp
    Product
    Oncommand Balance
    Vendor
    Ntp
    Product
    Ntp
    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

    No exploit reference

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    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
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    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
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    References

    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html
    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html
    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html
    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
    http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
    http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
    http://support.ntp.org/bin/view/Main/NtpBug2935
    http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd
    http://www.securityfocus.com/bid/81963
    http://www.securitytracker.com/id/1034782
    http://www.ubuntu.com/usn/USN-3096-1
    https://bto.bluecoat.com/security-advisory/sa113
    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
    https://www.kb.cert.org/vuls/id/718152
    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html
    http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html
    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html
    http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
    http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
    http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
    http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
    http://support.ntp.org/bin/view/Main/NtpBug2935
    http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd
    http://www.securityfocus.com/bid/81963
    http://www.securitytracker.com/id/1034782
    http://www.ubuntu.com/usn/USN-3096-1
    https://bto.bluecoat.com/security-advisory/sa113
    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
    https://www.kb.cert.org/vuls/id/718152

    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