vulnwire
8.1high

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…

Published 7 y ago · modified 4 mo ago · JSON

CVSS
8.1
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
2.3%
percentile 83%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

2.27% probability of exploitation in the next 30 days, higher than 83% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.08.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.06.8AV:N/AC:M/Au:N/C:P/I:P/A:P

References

  • tools.ietf.org /html/draft-gont-ntp-port-randomization-00 · x_refsource_MISC, x_transferred
  • securityfocus.com /bid/108010 · vdb-entry, x_refsource_BID, x_transferred
  • support.f5.com /csp/article/K09940637 · x_refsource_CONFIRM, x_transferred
  • support.f5.com /csp/article/K09940637?utm_source=f5support&amp%3Butm_medium=RSS · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.