CVE-2018-7184
ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a
02 Description
ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a
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
- 8.63% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 94.9% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- 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
- 2018-02-16
- 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
- 1335ed157650aaf708049cbc5b5df414ccb5dfc02c5470201bfca08ca367cf1f
05 Affected products
06 References
- packetstormsecurity.comhttp://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html
- www.securityfocus.com103192http://www.securityfocus.com/bid/103192
- 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
- support.ntp.orghttp://support.ntp.org/bin/view/Main/NtpBug3453
- usn.ubuntu.comUSN-3707-1https://usn.ubuntu.com/3707-1/
- www.synology.comhttps://www.synology.com/support/security/Synology_SA_18_13
- 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 18.04 LTS
- ntp Fixed in 1:4.2.8p10+dfsg-5ubuntu7.1
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.