CVE-2016-7426

CVSS V2 Medium 4.3 CVSS V3 High 7.5
Description
NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.
Overview
  • CVE ID
  • CVE-2016-7426
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2017-01-13T16:59:00
  • Last Modified Date
  • 2020-06-18T18:14:21
Weakness Enumerations
CWE URL
CWE-400 http://cwe.mitre.org/data/definitions/400.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* 1 OR 4.2.6 4.2.8
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* 1 OR 4.3.0 4.3.94
cpe:2.3:a:ntp:ntp:4.2.5:p203:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p204:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p205:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p206:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p207:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p208:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p209:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p210:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p211:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p212:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p213:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p214:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p215:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p216:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p217:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p218:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p219:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p220:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p221:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p222:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p223:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p224:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p225:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p226:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p227:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p228:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p229:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p230:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p231_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p232_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p233_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p234_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p235_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p236_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p237_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p238_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p239_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p240_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p241_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p242_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p243_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p244_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p245_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p246_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p247_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p248_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p249_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.5:p250_rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:-:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p4:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p5:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p6:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p7:*:*:*:*:*:* 1 OR
cpe:2.3:a:ntp:ntp:4.2.8:p8:*:*:*:*:*:* 1 OR
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:hpe:hpux-ntp:*:*:*:*:*:*:*:* 1 OR b.11.31 c.4.2.8.2.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 4.3
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8.6
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://www.kb.cert.org/vuls/id/633847 Third Party Advisory US Government Resource
http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities Release Notes Vendor Advisory
http://support.ntp.org/bin/view/Main/NtpBug3071 Issue Tracking Mitigation Vendor Advisory
http://nwtime.org/ntp428p9_release/ Third Party Advisory
http://www.securityfocus.com/bid/94451 Third Party Advisory VDB Entry
https://bto.bluecoat.com/security-advisory/sa139 Third Party Advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us Third Party Advisory
http://www.securitytracker.com/id/1037354 Third Party Advisory VDB Entry
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0252.html Third Party Advisory
https://usn.ubuntu.com/3707-2/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2016-7426
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7426
History
Created Old Value New Value Data Type Notes
2022-05-10 16:42:22 Added to TrackCVE
2022-12-02 12:54:58 2017-01-13T16:59Z 2017-01-13T16:59:00 CVE Published Date updated
2022-12-02 12:54:58 2020-06-18T18:14:21 CVE Modified Date updated
2022-12-02 12:54:58 Analyzed Vulnerability Status updated