Critical severity9.8NVD Advisory· Published Aug 7, 2017· Updated Jun 17, 2026
CVE-2015-7871
CVE-2015-7871
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
110- cpe:2.3:a:netapp:oncommand_balance:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_performance_manager:-:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:oncommand_unified_manager:-:*:*:*:*:clustered_data_ontap:*:*
cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*+ 82 more
- cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:*range: >=4.2.6,<4.2.8
- cpe:2.3:a:ntp:ntp:4.2.5:p186:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p187:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p188:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p189:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p190:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p191:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p192:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p193:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p194:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p195:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p196:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p197:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p198:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p199:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p200:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p201:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p202:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p203:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p204:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p205:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p206:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p207:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p208:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p209:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p210:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p211:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p212:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p213:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p214:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p215:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p216:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p217:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p218:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p219:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p220:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p221:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p222:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p223:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p224:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p225:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p226:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p227:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p228:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p229:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p230:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p231_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p232_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p233_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p234_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p235_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p236_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p237_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p238_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p239_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p240_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p241_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p242_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p243_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p244_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p245_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p246_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p247_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p248_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p249_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.5:p250_rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta4:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-beta5:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p1-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p2-rc3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc1:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc2:*:*:*:*:*:*
- cpe:2.3:a:ntp:ntp:4.2.8:p3-rc3:*:*:*:*:*:*
- (no CPE)range: <4.2.8p4, <4.3.77
- cpe:2.3:o:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*
- cpe:2.3:o:netapp:data_ontap:-:*:*:*:*:7-mode:*:*
- osv-coords18 versionspkg:rpm/opensuse/ntp&distro=openSUSE%20Tumbleweedpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Desktop%2011%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-LTSSpkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP3-TERADATApkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2011%20SP4pkg:rpm/suse/ntp&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/ntp&distro=SUSE%20Manager%202.1pkg:rpm/suse/ntp&distro=SUSE%20Manager%20Proxy%202.1pkg:rpm/suse/ntp&distro=SUSE%20OpenStack%20Cloud%205pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Desktop%2012pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP2-LTSSpkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Server%2012pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012pkg:rpm/suse/yast2-ntp-client&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012
< 4.2.8p9-1.1+ 17 more
- (no CPE)range: < 4.2.8p9-1.1
- (no CPE)range: < 4.2.8p4-5.1
- (no CPE)range: < 4.2.8p6-46.5.2
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p4-5.1
- (no CPE)range: < 4.2.8p6-46.5.2
- (no CPE)range: < 4.2.8p4-5.1
- (no CPE)range: < 4.2.8p6-46.5.2
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 4.2.8p6-41.1
- (no CPE)range: < 3.1.12.4-8.2
- (no CPE)range: < 2.17.14.1-1.12.1
- (no CPE)range: < 3.1.12.4-8.2
- (no CPE)range: < 3.1.12.4-8.2
- (no CPE)range: < 3.1.12.4-8.2
Patches
Vulnerability mechanics
References
10- support.ntp.org/bin/view/Main/NtpBug2941nvdVendor Advisory
- www.debian.org/security/2015/dsa-3388nvdThird Party Advisory
- www.securityfocus.com/bid/77287nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1033951nvdThird Party AdvisoryVDB Entry
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingThird Party AdvisoryVDB Entry
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplaynvdThird Party AdvisoryVDB Entry
- security.gentoo.org/glsa/201604-03nvdThird Party AdvisoryVDB Entry
- security.gentoo.org/glsa/201607-15nvdThird Party AdvisoryVDB Entry
- security.netapp.com/advisory/ntap-20171004-0001/nvdThird Party Advisory
- cert-portal.siemens.com/productcert/pdf/ssa-497656.pdfnvd
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