CVE-2016-7434

HIGH

7.5

CVSS Score

Published: January 13, 2017 at 04:00 PM UTC

Updated: June 17, 2026 at 12:53 AM UTC

2 products affected across 2 vendorsNTPHpux Ntp

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Severity

HIGH7.5

Exploit prediction

EPSS 53%

Description

The read_mru_list function in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (crash) via a crafted mrulist query.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Hpux Ntp · HPE

95%

b.11.31 ≤ v < c.4.2.8.2.0

Affected range stops below c.4.2.8.2.0, so it looks safe — our inference, not a vendor statement

NTP · Ntp

95%

4.3.0 ≤ v < 4.3.944.2.7 p100 4.2.7 p101 4.2.7 p102 4.2.7 p103 4.2.7 p104 4.2.7 p105 4.2.7 p106 4.2.7 p107 4.2.7 p108 4.2.7 p109 4.2.7 p110 4.2.7 p111 4.2.7 p112 4.2.7 p113 4.2.7 p114 4.2.7 p115 4.2.7 p116 4.2.7 p117 4.2.7 p118 4.2.7 p119 4.2.7 p120 4.2.7 p121 4.2.7 p122 4.2.7 p123 4.2.7 p124 4.2.7 p125 4.2.7 p126 4.2.7 p127 4.2.7 p128 4.2.7 p129 4.2.7 p130 4.2.7 p131 4.2.7 p132 4.2.7 p133 4.2.7 p134 4.2.7 p135 4.2.7 p136 4.2.7 p137 4.2.7 p138 4.2.7 p139 4.2.7 p140 4.2.7 p141 4.2.7 p142 4.2.7 p143 4.2.7 p144 4.2.7 p145 4.2.7 p146 4.2.7 p147 4.2.7 p148 4.2.7 p149 4.2.7 p150 4.2.7 p151 4.2.7 p152 4.2.7 p153 4.2.7 p154 4.2.7 p155 4.2.7 p156 4.2.7 p157 4.2.7 p158 4.2.7 p159 4.2.7 p160 4.2.7 p161 4.2.7 p162 4.2.7 p163 4.2.7 p164 4.2.7 p165 4.2.7 p166 4.2.7 p170 4.2.7 p171 4.2.7 p172 4.2.7 p173 4.2.7 p174 4.2.7 p175 4.2.7 p176 4.2.7 p177 4.2.7 p178 4.2.7 p179 4.2.7 p180 4.2.7 p181 4.2.7 p182 4.2.7 p183 4.2.7 p184 4.2.7 p185 4.2.7 p186 4.2.7 p187 4.2.7 p188 4.2.7 p189 4.2.7 p190 4.2.7 p191 4.2.7 p192 4.2.7 p193 4.2.7 p194 4.2.7 p195 4.2.7 p196 4.2.7 p197 4.2.7 p198 4.2.7 p199 4.2.7 p200 4.2.7 p201 4.2.7 p202 4.2.7 p203 4.2.7 p204 4.2.7 p205 4.2.7 p206 4.2.7 p207 4.2.7 p208 4.2.7 p209 4.2.7 p210 4.2.7 p211 4.2.7 p212 4.2.7 p213 4.2.7 p214 4.2.7 p215 4.2.7 p216 4.2.7 p217 4.2.7 p218 4.2.7 p219 4.2.7 p22 4.2.7 p220 4.2.7 p221 4.2.7 p222 4.2.7 p223 4.2.7 p224 4.2.7 p225 4.2.7 p226 4.2.7 p227 4.2.7 p228 4.2.7 p229 4.2.7 p23 4.2.7 p230 4.2.7 p231 4.2.7 p232 4.2.7 p233 4.2.7 p234 4.2.7 p235 4.2.7 p236 4.2.7 p237 4.2.7 p238 4.2.7 p239 4.2.7 p24 4.2.7 p240 4.2.7 p241 4.2.7 p242 4.2.7 p243 4.2.7 p244 4.2.7 p245 4.2.7 p246 4.2.7 p247 4.2.7 p248 4.2.7 p249 4.2.7 p25 4.2.7 p250 4.2.7 p251 4.2.7 p252 4.2.7 p253 4.2.7 p254 4.2.7 p255 4.2.7 p256 4.2.7 p257 4.2.7 p258 4.2.7 p259 4.2.7 p26 4.2.7 p260 4.2.7 p261 4.2.7 p262 4.2.7 p263 4.2.7 p264 4.2.7 p265 4.2.7 p266 4.2.7 p267 4.2.7 p268 4.2.7 p269 4.2.7 p27 4.2.7 p270 4.2.7 p271 4.2.7 p272 4.2.7 p273 4.2.7 p274 4.2.7 p275 4.2.7 p276 4.2.7 p277 4.2.7 p278 4.2.7 p279 4.2.7 p28 4.2.7 p280 4.2.7 p281 4.2.7 p282 4.2.7 p283 4.2.7 p284 4.2.7 p285 4.2.7 p286 4.2.7 p287 4.2.7 p288 4.2.7 p289 4.2.7 p29 4.2.7 p290 4.2.7 p291 4.2.7 p292 4.2.7 p293 4.2.7 p294 4.2.7 p295 4.2.7 p296 4.2.7 p297 4.2.7 p298 4.2.7 p299 4.2.7 p30 4.2.7 p300 4.2.7 p301 4.2.7 p302 4.2.7 p303 4.2.7 p304 4.2.7 p305 4.2.7 p306 4.2.7 p307 4.2.7 p308 4.2.7 p309 4.2.7 p31 4.2.7 p310 4.2.7 p311 4.2.7 p312 4.2.7 p313 4.2.7 p314 4.2.7 p315 4.2.7 p316 4.2.7 p317 4.2.7 p318 4.2.7 p319 4.2.7 p32 4.2.7 p320 4.2.7 p321 4.2.7 p322 4.2.7 p323 4.2.7 p324 4.2.7 p325 4.2.7 p326 4.2.7 p327 4.2.7 p328 4.2.7 p329 4.2.7 p33 4.2.7 p330 4.2.7 p331 4.2.7 p332 4.2.7 p333 4.2.7 p334 4.2.7 p335 4.2.7 p336 4.2.7 p337 4.2.7 p338 4.2.7 p339 4.2.7 p34 4.2.7 p340 4.2.7 p341 4.2.7 p342 4.2.7 p343 4.2.7 p344 4.2.7 p345 4.2.7 p346 4.2.7 p347 4.2.7 p348 4.2.7 p349 4.2.7 p35 4.2.7 p350 4.2.7 p351 4.2.7 p352 4.2.7 p353 4.2.7 p354 4.2.7 p355 4.2.7 p356 4.2.7 p357 4.2.7 p358 4.2.7 p359 4.2.7 p36 4.2.7 p360 4.2.7 p361 4.2.7 p362 4.2.7 p363 4.2.7 p364 4.2.7 p365 4.2.7 p366 4.2.7 p367 4.2.7 p368 4.2.7 p369 4.2.7 p37 4.2.7 p370 4.2.7 p371 4.2.7 p372 4.2.7 p373 4.2.7 p374 4.2.7 p375 4.2.7 p376 4.2.7 p377 4.2.7 p378 4.2.7 p379 4.2.7 p38 4.2.7 p380 4.2.7 p381 4.2.7 p382 4.2.7 p383 4.2.7 p384 4.2.7 p385 4.2.7 p386 4.2.7 p387 4.2.7 p388 4.2.7 p389 4.2.7 p39 4.2.7 p390 4.2.7 p391 4.2.7 p392 4.2.7 p393 4.2.7 p394 4.2.7 p395 4.2.7 p396 4.2.7 p397 4.2.7 p398 4.2.7 p399 4.2.7 p4 4.2.7 p40 4.2.7 p400 4.2.7 p401 4.2.7 p402 4.2.7 p403 4.2.7 p404 4.2.7 p405 4.2.7 p406 4.2.7 p407 4.2.7 p408 4.2.7 p409 4.2.7 p41 4.2.7 p410 4.2.7 p411 4.2.7 p412 4.2.7 p413 4.2.7 p414 4.2.7 p415 4.2.7 p416 4.2.7 p417 4.2.7 p418 4.2.7 p419 4.2.7 p42 4.2.7 p420 4.2.7 p421 4.2.7 p422 4.2.7 p423 4.2.7 p424 4.2.7 p425 4.2.7 p426 4.2.7 p427 4.2.7 p428 4.2.7 p429 4.2.7 p43 4.2.7 p430 4.2.7 p431 4.2.7 p432 4.2.7 p433 4.2.7 p434 4.2.7 p435 4.2.7 p436 4.2.7 p437 4.2.7 p438 4.2.7 p439 4.2.7 p44 4.2.7 p440 4.2.7 p441 4.2.7 p442 4.2.7 p443 4.2.7 p444 4.2.7 p445 4.2.7 p446 4.2.7 p447 4.2.7 p448 4.2.7 p449 4.2.7 p45 4.2.7 p450 4.2.7 p451 4.2.7 p452 4.2.7 p453 4.2.7 p454 4.2.7 p455 4.2.7 p456 4.2.7 p457 4.2.7 p458 4.2.7 p459 4.2.7 p46 4.2.7 p460 4.2.7 p461 4.2.7 p462 4.2.7 p463 4.2.7 p464 4.2.7 p465 4.2.7 p466 4.2.7 p467 4.2.7 p468 4.2.7 p469 4.2.7 p47 4.2.7 p470 4.2.7 p471 4.2.7 p472 4.2.7 p473 4.2.7 p474 4.2.7 p475 4.2.7 p476 4.2.7 p477 4.2.7 p478 4.2.7 p479 4.2.7 p48 4.2.7 p480 4.2.7 p481 4.2.7 p482 4.2.7 p483 4.2.7 p484_rc1 4.2.7 p485_rc1 4.2.7 p486_rc1 4.2.7 p49 4.2.7 p5 4.2.7 p50 4.2.7 p51 4.2.7 p52 4.2.7 p53 4.2.7 p54 4.2.7 p55 4.2.7 p56 4.2.7 p57 4.2.7 p58 4.2.7 p59 4.2.7 p6 4.2.7 p60 4.2.7 p61 4.2.7 p62 4.2.7 p63 4.2.7 p64 4.2.7 p65 4.2.7 p66 4.2.7 p67 4.2.7 p68 4.2.7 p69 4.2.7 p7 4.2.7 p70 4.2.7 p71 4.2.7 p72 4.2.7 p73 4.2.7 p74 4.2.7 p75 4.2.7 p76 4.2.7 p77 4.2.7 p78 4.2.7 p79 4.2.7 p8 4.2.7 p80 4.2.7 p81 4.2.7 p82 4.2.7 p83 4.2.7 p84 4.2.7 p85 4.2.7 p86 4.2.7 p87 4.2.7 p88 4.2.7 p89 4.2.7 p9 4.2.7 p90 4.2.7 p91 4.2.7 p92 4.2.7 p93 4.2.7 p94 4.2.7 p95 4.2.7 p96 4.2.7 p97 4.2.7 p98 4.2.7 p99 4.2.8 4.2.8 p1 4.2.8 p1-beta1 4.2.8 p1-beta2 4.2.8 p1-beta3 4.2.8 p1-beta4 4.2.8 p1-beta5 4.2.8 p1-rc1 4.2.8 p1-rc2 4.2.8 p2 4.2.8 p2-rc1 4.2.8 p2-rc2 4.2.8 p2-rc3 4.2.8 p3 4.2.8 p3-rc1 4.2.8 p3-rc2 4.2.8 p3-rc3 4.2.8 p4 4.2.8 p5 4.2.8 p6 4.2.8 p7 4.2.8 p8

Affected range stops below 4.3.94, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (10)

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

http://nwtime.org/ntp428p9_release/

x_refsource_CONFIRMIssue TrackingMitigationVendor Advisory

Source: [email protected]

http://support.ntp.org/bin/view/Main/NtpBug3082

x_refsource_CONFIRMRelease NotesVendor Advisory

Source: [email protected]

http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities

VDB Entryx_refsource_BIDThird Party Advisory

Source: [email protected]

http://www.securityfocus.com/bid/94448

VDB Entryx_refsource_SECTRACKThird Party Advisory

Source: [email protected]

http://www.securitytracker.com/id/1037354

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://bto.bluecoat.com/security-advisory/sa139

x_refsource_CONFIRMThird Party Advisory

Source: [email protected]

https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us

Vendor Advisoryx_refsource_FREEBSDThird Party Advisory

Source: [email protected]

https://security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-20

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