CVE-2015-7871
Summary
| CVE | CVE-2015-7871 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2017-08-07 20:29:00 UTC |
| Updated | 2025-04-20 01:37:25 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Problem Types: CWE-287 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 2.0 | [email protected] | Primary | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
LowAuthentication
NoneConfidentiality
PartialIntegrity
PartialAvailability
PartialAV:N/AC:L/Au:N/C:P/I:P/A:P
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Document Display | HPE Support Center | af854a3a-2127-422b-91ae-364da2661108 | h20566.www2.hpe.com | Third Party Advisory, VDB Entry |
| cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf | af854a3a-2127-422b-91ae-364da2661108 | cert-portal.siemens.com | |
| 1274265 – (CVE-2015-7871) CVE-2015-7871 ntp: crypto-NAK symmetric association authentication bypass vulnerability | af854a3a-2127-422b-91ae-364da2661108 | bugzilla.redhat.com | Issue Tracking, Third Party Advisory, VDB Entry |
| ntp Multiple Flaws Let Remote Users Deny Service, View Files, and Bypass Authentication to Modify the Time - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| NTP: Multiple vulnerabilities (GLSA 201607-15) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | Third Party Advisory, VDB Entry |
| October 2015 Network Time Protocol Daemon (ntpd) Vulnerabilities in Multiple NetApp Products | NetApp Product Security | af854a3a-2127-422b-91ae-364da2661108 | security.netapp.com | Third Party Advisory |
| Debian -- Security Information -- DSA-3388-1 ntp | af854a3a-2127-422b-91ae-364da2661108 | www.debian.org | Third Party Advisory |
| Xen: Multiple vulnerabilities (GLSA 201604-03) — Gentoo Security | af854a3a-2127-422b-91ae-364da2661108 | security.gentoo.org | Third Party Advisory, VDB Entry |
| Network Time Protocol CVE-2015-7871 Authentication Bypass Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| support.ntp.org/bin/view/Main/NtpBug2941 | af854a3a-2127-422b-91ae-364da2661108 | support.ntp.org | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.