CVE-2015-7871
Severity CVSS v4.0:
Pending analysis
Type:
CWE-287
Authentication Issues
Publication date:
07/08/2017
Last modified:
20/04/2025
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.
Impact
Base Score 3.x
9.80
Severity 3.x
CRITICAL
Base Score 2.0
7.50
Severity 2.0
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* | 4.2.6 (including) | 4.2.8 (excluding) |
| cpe:2.3:a:ntp:ntp:*:*:*:*:*:*:*:* | 4.3.0 (including) | 4.3.77 (excluding) |
| 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:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- http://support.ntp.org/bin/view/Main/NtpBug2941
- http://www.debian.org/security/2015/dsa-3388
- http://www.securityfocus.com/bid/77287
- http://www.securitytracker.com/id/1033951
- https://bugzilla.redhat.com/show_bug.cgi?id=1274265
- https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839
- https://security.gentoo.org/glsa/201604-03
- https://security.gentoo.org/glsa/201607-15
- https://security.netapp.com/advisory/ntap-20171004-0001/
- http://support.ntp.org/bin/view/Main/NtpBug2941
- http://www.debian.org/security/2015/dsa-3388
- http://www.securityfocus.com/bid/77287
- http://www.securitytracker.com/id/1033951
- https://bugzilla.redhat.com/show_bug.cgi?id=1274265
- https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05270839
- https://security.gentoo.org/glsa/201604-03
- https://security.gentoo.org/glsa/201607-15
- https://security.netapp.com/advisory/ntap-20171004-0001/



