Improper input validation in NTP
CVE-2016-7431
NTP before 4.2.8p9 allows remote attackers to bypass the origin timestamp protection mechanism via an origin timestamp of zero. NOTE: this vulnerability exists because of a CVE-2015-8138 regression.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.087 (95.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.087 · newest: 0.087 · change: 0.000
Affected products
- NTP — versions 4.2.8
Weakness classification (CWE)
References
- h20566.www2.hpe.com/hpsc/doc/public/display
- support.hpe.com/hpsc/doc/public/display
- www.securityfocus.com/bid/94454 (vdb-entry)
- support.ntp.org/bin/view/Main/SecurityNotice (Vendor Advisory)
- nwtime.org/ntp428p9_release/ (Release Notes, 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.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- www.securitytracker.com/id/1037354 (vdb-entry)
- bto.bluecoat.com/security-advisory/sa139
Frequently asked questions
- What is CVE-2016-7431?
- CVE-2016-7431 is a medium-severity vulnerability in NTP, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2017-01-13.
- How severe is CVE-2016-7431?
- Medium severity. CVSS v3 base score is 5.3 out of 10.