Information disclosure in NTP
CVE-2016-1550
An exploitable vulnerability exists in the message authentication functionality of libntp in ntp 4.2.8p4 and NTPSec a5fb34b9cc89b92a8fef2f459004865c93bb7f92. An attacker can send a series of crafted messages to attempt to recover the message digest key.
Vulnerability class: Information Disclosure
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:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.036 (89.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 89.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000
Affected products
- NTP — versions 4.2.8
- NTP Project — versions 4.2.8p3, 4.2.8p4
- Ntpsec Project — versions a5fb34b9cc89b92a8fef2f459004865c93bb7f92
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.ubuntu.com/usn/USN-3096-1 (vendor-advisory)
- www.debian.org/security/2016/dsa-3629 (vendor-advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- access.redhat.com/errata/RHSA-2016:1141 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html (vendor-advisory)
- www.kb.cert.org/vuls/id/718152 (third-party-advisory)
- rhn.redhat.com/errata/RHSA-2016-1552.html (vendor-advisory)
- www.securitytracker.com/id/1035705 (vdb-entry)
- www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- security.netapp.com/advisory/ntap-20171004-0002/
Frequently asked questions
- What is CVE-2016-1550?
- CVE-2016-1550 is a medium-severity vulnerability in NTP, classified under Information Disclosure. CVSS score: 5.3/10. Published 2017-01-06.
- How severe is CVE-2016-1550?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2016-1550 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.