CVE-2018-7170: hpe hpux-ntp
Vulnerability summary
CVE-2018-7170 is a medium (CVSS 5.3) vulnerability in hpe hpux-ntp. EPSS estimates a 2.69% chance of exploitation in the next 30 days, higher than 85.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 13 · Related 12Timeline
- 06-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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 metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
- OSV · DebianEcosystem advisory · calculated5.3MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS trend
Probability
2.69%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
0.00 pp
From 2.69% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Synology5 products
- diskstation_manager≥ 5.2, < 6.1.6-15266
- router_manager≥ 1.1, < 1.1.6-6931-3
- skynas< 6.1.5-15254
- virtual_diskstation_manager< 6.1.6-15266
- vs960hd_firmware< 2.2.3-1505
Debian1 product
- ntp< 1:4.2.8p11+dfsg-1
Hpe1 product
- hpux-ntp< c.4.2.8.4.0
Ntp1 product
- ntp≥ 4.2.0, < 4.2.8 | ≥ 4.3.0, < 4.3.92 | 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 | 4.2.8:p1-beta5 | 4.2.8:p1-rc1 | 4.2.8:p1-rc2 | 4.2.8:p2 | 4.2.8:p2-rc1 | 4.2.8:p2-rc2 | 4.2.8:p2-rc3 | 4.2.8:p3 | 4.2.8:p3-rc1 | 4.2.8:p3-rc2 | 4.2.8:p3-rc3 | 4.2.8:p4 | 4.2.8:p5 | 4.2.8:p6
Ubuntu1 product
- ntpAll versions (No fix recorded)
6 vendors · 11 products
References
15 links- packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.htmlX Refsource MISCThird Party AdvisoryVDB Entry
- security.freebsd.org/advisories/FreeBSD-SA-18:02.ntp.ascVendor AdvisoryX Refsource FREEBSDThird Party Advisory
- www.securityfocus.com/archive/1/541824/100/0/threadedMailing ListX Refsource BUGTRAQThird Party AdvisoryVDB Entry
- support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_usX Refsource CONFIRMThird Party Advisory
