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.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ntp | Ntp | 4.2.6 (including) | 4.2.8 (excluding) |
| Ntp | Ntp | 4.3.0 (including) | 4.3.77 (excluding) |
| Ntp | Ntp | 4.2.5-p186 (including) | 4.2.5-p186 (including) |
| Ntp | Ntp | 4.2.5-p187 (including) | 4.2.5-p187 (including) |
| Ntp | Ntp | 4.2.5-p188 (including) | 4.2.5-p188 (including) |
| Ntp | Ntp | 4.2.5-p189 (including) | 4.2.5-p189 (including) |
| Ntp | Ntp | 4.2.5-p190 (including) | 4.2.5-p190 (including) |
| Ntp | Ntp | 4.2.5-p191 (including) | 4.2.5-p191 (including) |
| Ntp | Ntp | 4.2.5-p192 (including) | 4.2.5-p192 (including) |
| Ntp | Ntp | 4.2.5-p193 (including) | 4.2.5-p193 (including) |
| Ntp | Ntp | 4.2.5-p194 (including) | 4.2.5-p194 (including) |
| Ntp | Ntp | 4.2.5-p195 (including) | 4.2.5-p195 (including) |
| Ntp | Ntp | 4.2.5-p196 (including) | 4.2.5-p196 (including) |
| Ntp | Ntp | 4.2.5-p197 (including) | 4.2.5-p197 (including) |
| Ntp | Ntp | 4.2.5-p198 (including) | 4.2.5-p198 (including) |
| Ntp | Ntp | 4.2.5-p199 (including) | 4.2.5-p199 (including) |
| Ntp | Ntp | 4.2.5-p200 (including) | 4.2.5-p200 (including) |
| Ntp | Ntp | 4.2.5-p201 (including) | 4.2.5-p201 (including) |
| Ntp | Ntp | 4.2.5-p202 (including) | 4.2.5-p202 (including) |
| Ntp | Ntp | 4.2.5-p203 (including) | 4.2.5-p203 (including) |
| Ntp | Ntp | 4.2.5-p204 (including) | 4.2.5-p204 (including) |
| Ntp | Ntp | 4.2.5-p205 (including) | 4.2.5-p205 (including) |
| Ntp | Ntp | 4.2.5-p206 (including) | 4.2.5-p206 (including) |
| Ntp | Ntp | 4.2.5-p207 (including) | 4.2.5-p207 (including) |
| Ntp | Ntp | 4.2.5-p208 (including) | 4.2.5-p208 (including) |
| Ntp | Ntp | 4.2.5-p209 (including) | 4.2.5-p209 (including) |
| Ntp | Ntp | 4.2.5-p210 (including) | 4.2.5-p210 (including) |
| Ntp | Ntp | 4.2.5-p211 (including) | 4.2.5-p211 (including) |
| Ntp | Ntp | 4.2.5-p212 (including) | 4.2.5-p212 (including) |
| Ntp | Ntp | 4.2.5-p213 (including) | 4.2.5-p213 (including) |
| Ntp | Ntp | 4.2.5-p214 (including) | 4.2.5-p214 (including) |
| Ntp | Ntp | 4.2.5-p215 (including) | 4.2.5-p215 (including) |
| Ntp | Ntp | 4.2.5-p216 (including) | 4.2.5-p216 (including) |
| Ntp | Ntp | 4.2.5-p217 (including) | 4.2.5-p217 (including) |
| Ntp | Ntp | 4.2.5-p218 (including) | 4.2.5-p218 (including) |
| Ntp | Ntp | 4.2.5-p219 (including) | 4.2.5-p219 (including) |
| Ntp | Ntp | 4.2.5-p220 (including) | 4.2.5-p220 (including) |
| Ntp | Ntp | 4.2.5-p221 (including) | 4.2.5-p221 (including) |
| Ntp | Ntp | 4.2.5-p222 (including) | 4.2.5-p222 (including) |
| Ntp | Ntp | 4.2.5-p223 (including) | 4.2.5-p223 (including) |
| Ntp | Ntp | 4.2.5-p224 (including) | 4.2.5-p224 (including) |
| Ntp | Ntp | 4.2.5-p225 (including) | 4.2.5-p225 (including) |
| Ntp | Ntp | 4.2.5-p226 (including) | 4.2.5-p226 (including) |
| Ntp | Ntp | 4.2.5-p227 (including) | 4.2.5-p227 (including) |
| Ntp | Ntp | 4.2.5-p228 (including) | 4.2.5-p228 (including) |
| Ntp | Ntp | 4.2.5-p229 (including) | 4.2.5-p229 (including) |
| Ntp | Ntp | 4.2.5-p230 (including) | 4.2.5-p230 (including) |
| Ntp | Ntp | 4.2.5-p231_rc1 (including) | 4.2.5-p231_rc1 (including) |
| Ntp | Ntp | 4.2.5-p232_rc1 (including) | 4.2.5-p232_rc1 (including) |
| Ntp | Ntp | 4.2.5-p233_rc1 (including) | 4.2.5-p233_rc1 (including) |
| Ntp | Ntp | 4.2.5-p234_rc1 (including) | 4.2.5-p234_rc1 (including) |
| Ntp | Ntp | 4.2.5-p235_rc1 (including) | 4.2.5-p235_rc1 (including) |
| Ntp | Ntp | 4.2.5-p236_rc1 (including) | 4.2.5-p236_rc1 (including) |
| Ntp | Ntp | 4.2.5-p237_rc1 (including) | 4.2.5-p237_rc1 (including) |
| Ntp | Ntp | 4.2.5-p238_rc1 (including) | 4.2.5-p238_rc1 (including) |
| Ntp | Ntp | 4.2.5-p239_rc1 (including) | 4.2.5-p239_rc1 (including) |
| Ntp | Ntp | 4.2.5-p240_rc1 (including) | 4.2.5-p240_rc1 (including) |
| Ntp | Ntp | 4.2.5-p241_rc1 (including) | 4.2.5-p241_rc1 (including) |
| Ntp | Ntp | 4.2.5-p242_rc1 (including) | 4.2.5-p242_rc1 (including) |
| Ntp | Ntp | 4.2.5-p243_rc1 (including) | 4.2.5-p243_rc1 (including) |
| Ntp | Ntp | 4.2.5-p244_rc1 (including) | 4.2.5-p244_rc1 (including) |
| Ntp | Ntp | 4.2.5-p245_rc1 (including) | 4.2.5-p245_rc1 (including) |
| Ntp | Ntp | 4.2.5-p246_rc1 (including) | 4.2.5-p246_rc1 (including) |
| Ntp | Ntp | 4.2.5-p247_rc1 (including) | 4.2.5-p247_rc1 (including) |
| Ntp | Ntp | 4.2.5-p248_rc1 (including) | 4.2.5-p248_rc1 (including) |
| Ntp | Ntp | 4.2.5-p249_rc1 (including) | 4.2.5-p249_rc1 (including) |
| Ntp | Ntp | 4.2.5-p250_rc1 (including) | 4.2.5-p250_rc1 (including) |
| Ntp | Ntp | 4.2.8-p1 (including) | 4.2.8-p1 (including) |
| Ntp | Ntp | 4.2.8-p1-beta1 (including) | 4.2.8-p1-beta1 (including) |
| Ntp | Ntp | 4.2.8-p1-beta2 (including) | 4.2.8-p1-beta2 (including) |
| Ntp | Ntp | 4.2.8-p1-beta3 (including) | 4.2.8-p1-beta3 (including) |
| Ntp | Ntp | 4.2.8-p1-beta4 (including) | 4.2.8-p1-beta4 (including) |
| Ntp | Ntp | 4.2.8-p1-beta5 (including) | 4.2.8-p1-beta5 (including) |
| Ntp | Ntp | 4.2.8-p1-rc1 (including) | 4.2.8-p1-rc1 (including) |
| Ntp | Ntp | 4.2.8-p1-rc2 (including) | 4.2.8-p1-rc2 (including) |
| Ntp | Ntp | 4.2.8-p2 (including) | 4.2.8-p2 (including) |
| Ntp | Ntp | 4.2.8-p2-rc1 (including) | 4.2.8-p2-rc1 (including) |
| Ntp | Ntp | 4.2.8-p2-rc2 (including) | 4.2.8-p2-rc2 (including) |
| Ntp | Ntp | 4.2.8-p2-rc3 (including) | 4.2.8-p2-rc3 (including) |
| Ntp | Ntp | 4.2.8-p3 (including) | 4.2.8-p3 (including) |
| Ntp | Ntp | 4.2.8-p3-rc1 (including) | 4.2.8-p3-rc1 (including) |
| Ntp | Ntp | 4.2.8-p3-rc2 (including) | 4.2.8-p3-rc2 (including) |
| Ntp | Ntp | 4.2.8-p3-rc3 (including) | 4.2.8-p3-rc3 (including) |