Vulnerability in NTP
CVE-2016-7433
NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a "root distance that did not include the peer dispersion."
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:N/A:L.
EPSS exploit prediction
EPSS: 0.098 (95.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.098 · newest: 0.098 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- h20566.www2.hpe.com/hpsc/doc/public/display
- rhn.redhat.com/errata/RHSA-2017-0252.html (vendor-advisory)
- 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)
- www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- www.securitytracker.com/id/1037354 (vdb-entry)
- bto.bluecoat.com/security-advisory/sa139
- www.securityfocus.com/bid/94455 (vdb-entry)
- security.FreeBSD.org/advisories/FreeBSD-SA-16:39.ntp.asc (vendor-advisory)
Frequently asked questions
- What is CVE-2016-7433?
- CVE-2016-7433 is a medium-severity vulnerability in NTP, classified under Incorrect Calculation. CVSS score: 5.3/10. Published 2017-01-13.
- How severe is CVE-2016-7433?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2016-7433 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.