CVE-2018-7183: canonical ubuntu_linux Out-of-bounds Write
CVSS: 9.8v3.0CriticalModified
AliasesUBUNTU-CVE-2018-7183DEBIAN-CVE-2018-7183
Published 08-03-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-7183 is a critical (CVSS 9.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 10.21% chance of exploitation in the next 30 days, higher than 95.6% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.0 (NVD)EPSS score
10.21%
0%100%
Medium · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 8 · Related 7Timeline
- 08-03-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Buffer overflow in the decodearr function in ntpq in ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to execute arbitrary code by leveraging an ntpq query and sending a response with a crafted array.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
10.21%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
0.00 pp
From 10.21% on 18-09-2026
18-09-202618-10-2026
EPSS score10.21%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 17.10 | 18.04
Debian1 product
- ntp< 1:4.2.8p11+dfsg-1
Freebsd1 product
- freebsdEOL10.3 | 10.4 | 11.1
Netapp1 product
Ntp1 product
- ntp4.2.8:p10 | 4.2.8:p6 | 4.2.8:p7 | 4.2.8:p8 | 4.2.8:p9
Ubuntu1 product
- ntp< 1:4.2.6.p5+dfsg-3ubuntu2.14.04.13 | < 1:4.2.8p4+dfsg-3ubuntu5.9 | < 1:4.2.8p10+dfsg-5ubuntu7.1
6 vendors · 6 products
References
17 links- security.freebsd.org/advisories/FreeBSD-SA-18:02.ntp.ascVendor AdvisoryX Refsource FREEBSDThird Party Advisory
- www.oracle.com//security-alerts/cpujul2021.htmlX Refsource MISC
