CVE-2018-7170
MEDIUM EPSS 84.4%
Published Mar 6, 20188y ago · Modified Jun 17, 20262w ago
5.3 CVSS 3.1
Published Mar 6, 2018 8y ago
Last Modified Jun 17, 2026 2w ago
Description
ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None
Threat Intelligence
EPSS Exploit Probability
84.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Affected Products 31
| Vendor | Product | Version | Range |
|---|---|---|---|
| ntp | ntp | * | ≥4.2.0 – <4.2.8 |
| ntp | ntp | * | ≥4.3.0 – <4.3.92 |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| ntp | ntp | 4.2.8 | any |
| synology | router_manager | * | ≥1.1 – <1.1.6-6931-3 |
| synology | skynas | * | <6.1.5-15254 |
| synology | virtual_diskstation_manager | * | <6.1.6-15266 |
| synology | diskstation_manager | * | ≥5.2 – <6.1.6-15266 |
| synology | vs960hd_firmware | * | <2.2.3-1505 |
| synology | vs960hd | * | any |
| netapp | hci | * | any |
| netapp | solidfire | * | any |
| hpe | hpux-ntp | * | <c.4.2.8.4.0 |
References 10
- packetstormsecurity.com http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
- support.ntp.org http://support.ntp.org/bin/view/Main/NtpBug3415
- securityfocus.com http://www.securityfocus.com/archive/1/541824/100/0/threaded
- securityfocus.com http://www.securityfocus.com/bid/103194
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1550214
- security.freebsd.org https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
- security.gentoo.org https://security.gentoo.org/glsa/201805-12
- security.netapp.com https://security.netapp.com/advisory/ntap-20180626-0001/
- support.hpe.com https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
- synology.com https://www.synology.com/support/security/Synology_SA_18_13
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.