Vulnerability Database

289,697

Total vulnerabilities in the database

CVE-2015-7871

Crypto-NAK packets in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to bypass authentication.

  • Published: Aug 7, 2017
  • Updated: Apr 13, 2023
  • CVE: CVE-2015-7871
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
Software From Fixed in
ntp / ntp 4.2.5-p238_rc1 4.2.5-p238_rc1.x
ntp / ntp 4.2.5-p240_rc1 4.2.5-p240_rc1.x
ntp / ntp 4.2.5-p210 4.2.5-p210.x
ntp / ntp 4.2.5-p199 4.2.5-p199.x
ntp / ntp 4.2.5-p212 4.2.5-p212.x
ntp / ntp 4.2.5-p207 4.2.5-p207.x
ntp / ntp 4.2.5-p244_rc1 4.2.5-p244_rc1.x
ntp / ntp 4.2.5-p204 4.2.5-p204.x
ntp / ntp 4.2.5-p230 4.2.5-p230.x
ntp / ntp 4.2.5-p186 4.2.5-p186.x
ntp / ntp 4.2.5-p237_rc1 4.2.5-p237_rc1.x
ntp / ntp 4.2.5-p241_rc1 4.2.5-p241_rc1.x
ntp / ntp 4.2.5-p225 4.2.5-p225.x
ntp / ntp 4.2.5-p248_rc1 4.2.5-p248_rc1.x
ntp / ntp 4.2.5-p231_rc1 4.2.5-p231_rc1.x
ntp / ntp 4.2.5-p220 4.2.5-p220.x
ntp / ntp 4.2.5-p187 4.2.5-p187.x
ntp / ntp 4.2.8-p2 4.2.8-p2.x
ntp / ntp 4.2.5-p189 4.2.5-p189.x
ntp / ntp 4.2.8-p3 4.2.8-p3.x
ntp / ntp 4.2.5-p202 4.2.5-p202.x
ntp / ntp 4.2.5-p232_rc1 4.2.5-p232_rc1.x
ntp / ntp 4.2.5-p223 4.2.5-p223.x
ntp / ntp 4.2.5-p193 4.2.5-p193.x
ntp / ntp 4.2.5-p217 4.2.5-p217.x
ntp / ntp 4.2.5-p196 4.2.5-p196.x
ntp / ntp 4.2.5-p216 4.2.5-p216.x
ntp / ntp 4.2.5-p206 4.2.5-p206.x
ntp / ntp 4.2.5-p219 4.2.5-p219.x
ntp / ntp 4.2.5-p243_rc1 4.2.5-p243_rc1.x
ntp / ntp 4.2.5-p247_rc1 4.2.5-p247_rc1.x
ntp / ntp 4.2.5-p191 4.2.5-p191.x
ntp / ntp 4.2.5-p188 4.2.5-p188.x
ntp / ntp 4.2.5-p201 4.2.5-p201.x
ntp / ntp 4.2.5-p236_rc1 4.2.5-p236_rc1.x
ntp / ntp 4.2.5-p194 4.2.5-p194.x
ntp / ntp 4.2.5-p214 4.2.5-p214.x
ntp / ntp 4.2.5-p195 4.2.5-p195.x
ntp / ntp 4.2.5-p239_rc1 4.2.5-p239_rc1.x
ntp / ntp 4.2.5-p205 4.2.5-p205.x
ntp / ntp 4.2.5-p200 4.2.5-p200.x
ntp / ntp 4.2.5-p242_rc1 4.2.5-p242_rc1.x
ntp / ntp 4.2.5-p197 4.2.5-p197.x
ntp / ntp 4.2.5-p228 4.2.5-p228.x
ntp / ntp 4.2.5-p211 4.2.5-p211.x
ntp / ntp 4.2.5-p229 4.2.5-p229.x
ntp / ntp 4.2.5-p190 4.2.5-p190.x
ntp / ntp 4.2.5-p246_rc1 4.2.5-p246_rc1.x
ntp / ntp 4.2.5-p222 4.2.5-p222.x
ntp / ntp 4.2.5-p224 4.2.5-p224.x
ntp / ntp 4.2.5-p250_rc1 4.2.5-p250_rc1.x
ntp / ntp 4.2.5-p203 4.2.5-p203.x
ntp / ntp 4.2.5-p218 4.2.5-p218.x
ntp / ntp 4.2.5-p209 4.2.5-p209.x
ntp / ntp 4.2.5-p198 4.2.5-p198.x
ntp / ntp 4.2.5-p208 4.2.5-p208.x
ntp / ntp 4.2.5-p234_rc1 4.2.5-p234_rc1.x
ntp / ntp 4.2.5-p245_rc1 4.2.5-p245_rc1.x
ntp / ntp 4.2.5-p215 4.2.5-p215.x
ntp / ntp 4.2.5-p249_rc1 4.2.5-p249_rc1.x
ntp / ntp 4.2.5-p192 4.2.5-p192.x
ntp / ntp 4.2.5-p227 4.2.5-p227.x
ntp / ntp 4.2.5-p221 4.2.5-p221.x
ntp / ntp 4.2.5-p235_rc1 4.2.5-p235_rc1.x
ntp / ntp 4.2.5-p226 4.2.5-p226.x
ntp / ntp 4.2.8-p1 4.2.8-p1.x
ntp / ntp 4.2.5-p213 4.2.5-p213.x
ntp / ntp 4.2.5-p233_rc1 4.2.5-p233_rc1.x
ntp / ntp 4.2.8-p3-rc3 4.2.8-p3-rc3.x
ntp / ntp 4.2.8-p3-rc2 4.2.8-p3-rc2.x
ntp / ntp 4.2.8-p3-rc1 4.2.8-p3-rc1.x
ntp / ntp 4.2.8-p2-rc3 4.2.8-p2-rc3.x
ntp / ntp 4.2.8-p2-rc2 4.2.8-p2-rc2.x
ntp / ntp 4.2.8-p2-rc1 4.2.8-p2-rc1.x
ntp / ntp 4.2.8-p1-rc2 4.2.8-p1-rc2.x
ntp / ntp 4.2.8-p1-rc1 4.2.8-p1-rc1.x
ntp / ntp 4.2.8-p1-beta5 4.2.8-p1-beta5.x
ntp / ntp 4.2.8-p1-beta4 4.2.8-p1-beta4.x
ntp / ntp 4.2.8-p1-beta3 4.2.8-p1-beta3.x
ntp / ntp 4.2.8-p1-beta2 4.2.8-p1-beta2.x
ntp / ntp 4.2.8-p1-beta1 4.2.8-p1-beta1.x
ntp / ntp 4.3.0 4.3.77
ntp / ntp 4.2.6 4.2.8
debian / debian_linux 8.0 8.0.x
debian / debian_linux 7.0 7.0.x
debian / debian_linux 9.0 9.0.x