CVE-2018-7183

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-03-08 · updated 2026-06-17
Weakness: CWE-787

Description

Buffer overflow in the decodearr function in ntpq in ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to execute arbitrary code by leveraging an ntpq query and sending a response with a crafted array.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 17.10, 18.04
FreeBSD: 10.3, 10.4, 11.1
NetApp Element Software: all versions
NTP: 4.2.8-p10, 4.2.8-p6, 4.2.8-p7, 4.2.8-p8, 4.2.8-p9

References

http://support.ntp.org/bin/view/Main/NtpBug3414
http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S
http://www.securityfocus.com/bid/103351
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
https://security.gentoo.org/glsa/201805-12
https://security.netapp.com/advisory/ntap-20180626-0001/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
https://usn.ubuntu.com/3707-1/
https://usn.ubuntu.com/3707-2/
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.synology.com/support/security/Synology_SA_18_13
http://support.ntp.org/bin/view/Main/NtpBug3414

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