NULL pointer dereference in NTP
CVE-2016-9311
ntpd in NTP before 4.2.8p9, when the trap service is enabled, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted packet.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.112 (95.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.112 · newest: 0.112 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- h20566.www2.hpe.com/hpsc/doc/public/display
- www.securityfocus.com/bid/94444 (VDB Entry, Third Party Advisory, vdb-entry)
- usn.ubuntu.com/3707-2/ (vendor-advisory)
- 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.securitytracker.com/id/1037354 (vdb-entry)
- bto.bluecoat.com/security-advisory/sa139
- support.hpe.com/hpsc/doc/public/display
Frequently asked questions
- What is CVE-2016-9311?
- CVE-2016-9311 is a medium-severity vulnerability in NTP, classified under NULL Pointer Dereference. CVSS score: 5.9/10. Published 2017-01-13.
- How severe is CVE-2016-9311?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2016-9311 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.