CVE-2018-7170
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.68% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 85.7% of scored records. A rank, not a probability.
- NVD base score
- 5.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-03-06 20:00Z8 YR AGO
- Last updated
- 2024-08-05 06:24Z2 YR AGO
- Reserved
- 2018-02-15
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- No CWE assigned
- Data version
- 5.1
- Document digest
- a087e3b20884b60928cbb048efb66a5bbe4c4492681503c86c6afeeda2988d0c
05 Affected products
06 References
- packetstormsecurity.comhttp://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
- security.gentoo.orgGLSA-201805-12https://security.gentoo.org/glsa/201805-12
- security.freebsd.orgFreeBSD-SA-18:02https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20180626-0001/
- www.securityfocus.com20180301 [Newsletter/Marketing] [slackware-security] ntp (SSA:2018-060-02)http://www.securityfocus.com/archive/1/541824/100/0/threaded
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1550214
- support.ntp.orghttp://support.ntp.org/bin/view/Main/NtpBug3415
- www.synology.comhttps://www.synology.com/support/security/Synology_SA_18_13
- www.securityfocus.com103194http://www.securityfocus.com/bid/103194
- support.hpe.comhttps://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
07 Fixed in
Arch Linux
- ntp Fixed in 4.2.8.p11-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 11
- ntp Fixed in 1:4.2.8p11+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- ntp No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- ntp No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- ntp No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.