Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2015-7974

Improper Authentication

Published: Jan 26, 2016 | Modified: Apr 12, 2025
CVSS 3.x
7.7
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
CVSS 2.x
4 MEDIUM
AV:N/AC:L/Au:S/C:N/I:P/A:N
RedHat/V2
3.6 LOW
AV:N/AC:H/Au:S/C:N/I:P/A:P
RedHat/V3
Ubuntu
LOW
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2015-7974
CWEhttps://cwe.mitre.org/data/definitions/287.html

NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a skeleton key.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

NameVendorStart VersionEnd Version
NtpNtp4.2.0 (including)4.2.8 (excluding)
NtpNtp4.3.0 (including)4.3.90 (excluding)
NtpNtp4.2.8 (including)4.2.8 (including)
NtpNtp4.2.8-p1 (including)4.2.8-p1 (including)
NtpNtp4.2.8-p1-beta1 (including)4.2.8-p1-beta1 (including)
NtpNtp4.2.8-p1-beta2 (including)4.2.8-p1-beta2 (including)
NtpNtp4.2.8-p1-beta3 (including)4.2.8-p1-beta3 (including)
NtpNtp4.2.8-p1-beta4 (including)4.2.8-p1-beta4 (including)
NtpNtp4.2.8-p1-beta5 (including)4.2.8-p1-beta5 (including)
NtpNtp4.2.8-p1-rc1 (including)4.2.8-p1-rc1 (including)
NtpNtp4.2.8-p1-rc2 (including)4.2.8-p1-rc2 (including)
NtpNtp4.2.8-p2 (including)4.2.8-p2 (including)
NtpNtp4.2.8-p2-rc1 (including)4.2.8-p2-rc1 (including)
NtpNtp4.2.8-p2-rc2 (including)4.2.8-p2-rc2 (including)
NtpNtp4.2.8-p2-rc3 (including)4.2.8-p2-rc3 (including)
NtpNtp4.2.8-p3 (including)4.2.8-p3 (including)
NtpNtp4.2.8-p3-rc1 (including)4.2.8-p3-rc1 (including)
NtpNtp4.2.8-p3-rc2 (including)4.2.8-p3-rc2 (including)
NtpNtp4.2.8-p3-rc3 (including)4.2.8-p3-rc3 (including)
NtpNtp4.2.8-p4 (including)4.2.8-p4 (including)
NtpNtp4.2.8-p5 (including)4.2.8-p5 (including)
Red Hat Enterprise Linux 7RedHatntp-0:4.2.6p5-25.el7*
NtpUbuntuesm-infra-legacy/trusty*
NtpUbuntuesm-infra/xenial*
NtpUbuntuprecise*
NtpUbuntutrusty*
NtpUbuntutrusty/esm*
NtpUbuntuupstream*
NtpUbuntuvivid*
NtpUbuntuvivid/stable-phone-overlay*
NtpUbuntuwily*
NtpUbuntuxenial*

Potential Mitigations

References

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