CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2016-4954
High (7.5). EPSS 13% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 13% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
- CWE
- CWE-362
- Published
- Modified
- Record from
- the NVD, synced
Affected
- ntp:ntp
- opensuse:leap
- opensuse:opensuse
- oracle:solaris
- siemens:simatic_net_cp_443-1_opc_ua_firmware
- siemens:tim_4r-ie_dnp3_firmware
- siemens:tim_4r-ie_firmware
- suse:linux_enterprise_desktop
- suse:linux_enterprise_server
- suse:manager
- suse:manager_proxy
- suse:openstack_cloud
References
- http://bugs.ntp.org/3044
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00020.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00023.html
- http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00024.html