CVE-2015-5146

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-08-24 · updated 2026-06-17
Weakness: CWE-20

Description

ntpd in ntp before 4.2.8p3 with remote configuration enabled allows remote authenticated users with knowledge of the configuration password and access to a computer entrusted to perform remote configuration to cause a denial of service (service crash) via a NULL byte in a crafted configuration directive packet.

Affected products

Debian Linux: 7.0, 8.0
Fedoraproject Fedora: 21, 22, 23
NTP: through 4.2.8

References

http://bugs.ntp.org/show_bug.cgi?id=2853
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html
http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu
http://www.debian.org/security/2015/dsa-3388
http://www.securityfocus.com/bid/75589
http://www.securitytracker.com/id/1034168
https://bugzilla.redhat.com/show_bug.cgi?id=1238136
https://security.gentoo.org/glsa/201509-01
https://security.netapp.com/advisory/ntap-20180731-0003/
http://bugs.ntp.org/show_bug.cgi?id=2853

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