Resource exhaustion in NTP
CVE-2016-7427
The broadcast mode replay prevention functionality in ntpd in NTP before 4.2.8p9 allows remote attackers to cause a denial of service (reject broadcast mode packets) via a crafted broadcast mode packet.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.039 (90.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000
Affected products
- NTP — versions 4.2.8
Weakness classification (CWE)
References
- h20566.www2.hpe.com/hpsc/doc/public/display
- usn.ubuntu.com/3707-2/ (vendor-advisory)
- support.hpe.com/hpsc/doc/public/display
- support.ntp.org/bin/view/Main/SecurityNotice (Vendor Advisory)
- nwtime.org/ntp428p9_release/ (Release Notes, Vendor Advisory)
- support.ntp.org/bin/view/Main/NtpBug3114 (Mitigation, Issue Tracking, Vendor Advisory)
- www.kb.cert.org/vuls/id/633847 (US Government Resource, Third Party Advisory, third-party-advisory)
- support.hpe.com/hpsc/doc/public/display
- www.securitytracker.com/id/1037354 (vdb-entry)
- bto.bluecoat.com/security-advisory/sa139
Frequently asked questions
- What is CVE-2016-7427?
- CVE-2016-7427 is a medium-severity vulnerability in NTP, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2017-01-13.
- How severe is CVE-2016-7427?
- Medium severity. CVSS v3 base score is 4.3 out of 10.