What’s Vulnerable › Vulnerabilities

CVE-2018-7185

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 9.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-06 · updated 2026-06-17

Description

The protocol engine in ntp 4.2.6 before 4.2.8p11 allows a remote attackers to cause a denial of service (disruption) by continually sending a packet with a zero-origin timestamp and source IP address of the "other side" of an interleaved association causing the victim ntpd to reset its association.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 16.04, 17.10, 18.04
• HPE Hpux-Ntp: before c.4.2.8.4.0 — fixed in c.4.2.8.4.0
• NetApp Hci: all versions
• NetApp Solidfire: all versions
• NTP: from 4.2.6 before 4.2.8; 4.2.8, 4.2.8-p1, 4.2.8-p1-beta1, 4.2.8-p1-beta2, 4.2.8-p1-beta3, 4.2.8-p1-beta4 (+18) — fixed in 4.2.8
• Oracle Fujitsu M10-1 Firmware: before xcp2361; before xcp3070 — fixed in xcp2361, xcp3070
• Oracle Fujitsu M10-4 Firmware: before xcp2361; before xcp3070 — fixed in xcp2361, xcp3070
• Oracle Fujitsu M10-4S Firmware: before xcp2361; before xcp3070 — fixed in xcp2361, xcp3070
• Oracle Fujitsu M12-1 Firmware: before xcp2361; before xcp3070 — fixed in xcp2361, xcp3070
• Oracle Fujitsu M12-2 Firmware: before xcp2361; before xcp3070 — fixed in xcp2361, xcp3070
• Oracle Fujitsu M12-2S Firmware: before xcp2361; before xcp3070 — fixed in xcp2361, xcp3070
• Synology DiskStation Manager: from 5.2 before 6.1.6-15266 — fixed in 6.1.6-15266
• Synology Router Manager (SRM): from 1.1 before 1.1.6-6931-3 — fixed in 1.1.6-6931-3
• Synology Skynas: before 6.1.5-15254 — fixed in 6.1.5-15254
• Synology Virtual Diskstation Manager: before 6.1.6-15266 — fixed in 6.1.6-15266
• Synology Vs960Hd Firmware: before 2.2.3-1505 — fixed in 2.2.3-1505

How to fix

Upgrade to a fixed version: HPE Hpux-Ntp c.4.2.8.4.0; NTP 4.2.8; Oracle Fujitsu M10-1 Firmware xcp2361, xcp3070; Oracle Fujitsu M10-4 Firmware xcp2361, xcp3070; Oracle Fujitsu M10-4S Firmware xcp2361, xcp3070; Oracle Fujitsu M12-1 Firmware xcp2361, xcp3070; Oracle Fujitsu M12-2 Firmware xcp2361, xcp3070; Oracle Fujitsu M12-2S Firmware xcp2361, xcp3070; Synology DiskStation Manager 6.1.6-15266; Synology Router Manager (SRM) 1.1.6-6931-3; Synology Skynas 6.1.5-15254; Synology Virtual Diskstation Manager 6.1.6-15266. Check the vendor advisory for mitigations.

References

• http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
• http://support.ntp.org/bin/view/Main/NtpBug3454
• http://www.securityfocus.com/archive/1/541824/100/0/threaded
• http://www.securityfocus.com/bid/103339
• 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/technetwork/security-advisory/cpuoct2019-5072832.html
• https://www.synology.com/support/security/Synology_SA_18_13

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