CVE-2016-4954
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.8 Medium
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.026 Low
EPSS
Percentile
90.3%
The process_packet function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p8 allows remote attackers to cause a denial of service (peer-variable modification) by sending spoofed packets from many source IP addresses in a certain scenario, as demonstrated by triggering an incorrect leap indication.
References
bugs.ntp.org/3044
lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00028.html
lists.opensuse.org/opensuse-security-announce/2016-06/msg00040.html
lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
packetstormsecurity.com/files/137321/Slackware-Security-Advisory-ntp-Updates.html
packetstormsecurity.com/files/137322/FreeBSD-Security-Advisory-FreeBSD-SA-16-24.ntp.html
support.ntp.org/bin/view/Main/NtpBug3044
support.ntp.org/bin/view/Main/SecurityNotice
tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160603-ntpd
www.kb.cert.org/vuls/id/321640
www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
www.securityfocus.com/archive/1/538599/100/0/threaded
www.securityfocus.com/archive/1/538600/100/0/threaded
www.securityfocus.com/archive/1/540683/100/0/threaded
www.securityfocus.com/archive/1/archive/1/538599/100/0/threaded
www.securityfocus.com/archive/1/archive/1/538600/100/0/threaded
www.securityfocus.com/archive/1/archive/1/540683/100/0/threaded
www.securitytracker.com/id/1036037
www.ubuntu.com/usn/USN-3096-1
cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf
cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03757en_us
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/K3EYJQHJZ2KTVQ7ICEFHXTLZ36MRASWX/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORAMN3Q7TVJ54MBYF75XCJOE3DP7LYHT/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WNWGCQLW2VY72NIUYMJOCAKJKTXHDUK2/
security.FreeBSD.org/advisories/FreeBSD-SA-16:24.ntp.asc
security.gentoo.org/glsa/201607-15
us-cert.cisa.gov/ics/advisories/icsa-21-103-11
us-cert.cisa.gov/ics/advisories/icsa-21-159-11
www.kb.cert.org/vuls/id/321640
Social References
More
Related
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.8 Medium
AI Score
Confidence
High
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.026 Low
EPSS
Percentile
90.3%