Vulnerability in NTP
CVE-2019-11331
Network Time Protocol (NTP), as specified in RFC 5905, uses port 123 even for modes where a fixed port number is not required, which makes it easier for remote attackers to conduct off-path attacks.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.026 (85.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.026 · newest: 0.026 · change: 0.000
Affected products
References
- tools.ietf.org/html/draft-gont-ntp-port-randomization-00 (Third Party Advisory)
- www.securityfocus.com/bid/108010 (Third Party Advisory, vdb-entry)
- support.f5.com/csp/article/K09940637
- support.f5.com/csp/article/K09940637
Frequently asked questions
- What is CVE-2019-11331?
- CVE-2019-11331 is a high-severity vulnerability in NTP. CVSS score: 8.1/10. Published 2019-04-18.
- How severe is CVE-2019-11331?
- High severity. CVSS v3 base score is 8.1 out of 10.