CVE-2018-7184: canonical ubuntu_linux
Vulnerability summary
CVE-2018-7184 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 8.63% chance of exploitation in the next 30 days, higher than 95% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 8 · Related 7Timeline
- 06-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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 zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
8.63%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
+0.11 pp
From 8.53% 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_manager5.2 | 6.0 | 6.1
- router_manager1.1
- skynasna
- virtual_diskstation_managerna
- vs960hd_firmwarena
Netapp2 products
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 17.10 | 18.04
Debian1 product
- ntp< 1:4.2.8p11+dfsg-1
Ntp1 product
- ntp4.2.8:p10 | 4.2.8:p4 | 4.2.8:p5 | 4.2.8:p6 | 4.2.8:p7 | 4.2.8:p8 | 4.2.8:p9
Slackware1 product
- slackware_linuxEOL14.0 | 14.1 | 14.2
Ubuntu1 product
- ntp< 1:4.2.8p10+dfsg-5ubuntu7.1
7 vendors · 12 products
References
16 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
