CVEvulnerability

CVE-2016-4956

5.3 MEDIUM Published 2016-07-05 Modified 2026-06-17 Official page ↗

Status: Modified
Published: 2016-07-05
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS 2.0 ([email protected]): 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P

Description

ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (interleaved-mode transition and time change) via a spoofed broadcast packet. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-1548.

Affected configurations

• ntp ntp (>= 4.2.0 < 4.2.8) • ntp ntp (>= 4.3.0 < 4.3.93) • ntp ntp 4.2.8 • oracle solaris 10 • oracle solaris 11.3 • suse manager proxy 2.1 • suse openstack cloud 5 • novell suse manager 2.1 • opensuse leap 42.1 • opensuse opensuse 13.2 • suse linux enterprise desktop 12 • suse linux enterprise server 11 • suse linux enterprise server 12 • siemens simatic net cp 443-1 opc ua firmware

References

http://bugs.ntp.org/3042 Issue Tracking, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html lists.opensuse.org
http://packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.html packetstormsecurity.com
http://support.ntp.org/bin/view/Main/NtpBug3042 Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice Release Notes, Vendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd tools.cisco.com
http://www.kb.cert.org/vuls/id/321640 Third Party Advisory, US Government Resource
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory
http://www.securityfocus.com/archive/1/538599/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/538600/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/540683/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/archive/1/540683/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/bid/91009 Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036037 Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-3096-1 www.ubuntu.com
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf Third Party Advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03757en_us Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3EYJQHJZ2KTVQ7ICEFHXTLZ36MRASWX/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORAMN3Q7TVJ54MBYF75XCJOE3DP7LYHT/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNWGCQLW2VY72NIUYMJOCAKJKTXHDUK2/ lists.fedoraproject.org
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc Third Party Advisory
https://security.gentoo.org/glsa/201607-15 Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 us-cert.cisa.gov
https://www.kb.cert.org/vuls/id/321640 www.kb.cert.org
http://bugs.ntp.org/3042 Issue Tracking, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html lists.opensuse.org
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html lists.opensuse.org
http://packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.html packetstormsecurity.com
http://support.ntp.org/bin/view/Main/NtpBug3042 Vendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice Release Notes, Vendor Advisory
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd tools.cisco.com
http://www.kb.cert.org/vuls/id/321640 Third Party Advisory, US Government Resource
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html Third Party Advisory
http://www.securityfocus.com/archive/1/538599/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/538600/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/540683/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/archive/1/archive/1/540683/100/0/threaded www.securityfocus.com
http://www.securityfocus.com/bid/91009 Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1036037 Third Party Advisory, VDB Entry
http://www.ubuntu.com/usn/USN-3096-1 www.ubuntu.com
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf Third Party Advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03757en_us Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3EYJQHJZ2KTVQ7ICEFHXTLZ36MRASWX/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORAMN3Q7TVJ54MBYF75XCJOE3DP7LYHT/ lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNWGCQLW2VY72NIUYMJOCAKJKTXHDUK2/ lists.fedoraproject.org
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc Third Party Advisory
https://security.gentoo.org/glsa/201607-15 Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 us-cert.cisa.gov
https://www.kb.cert.org/vuls/id/321640 www.kb.cert.org