Vulnerability Database

289,599

Total vulnerabilities in the database

CVE-2009-3563

ntp_request.c in ntpd in NTP before 4.2.4p8, and 4.2.5, allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by using MODE_PRIVATE to send a spoofed (1) request or (2) response packet that triggers a continuous exchange of MODE_PRIVATE error responses between two NTP daemons.

  • Published: Dec 9, 2009
  • Updated: Apr 13, 2023
  • CVE: CVE-2009-3563
  • Severity: Medium
  • Exploit:

CVSS v2:

  • Severity: Medium
  • Score: 6.4
  • AV:N/AC:L/Au:N/C:N/I:P/A:P

No CWE or OWASP classifications available.

Software From Fixed in
ntp / ntp - 4.2.2p4.x
ntp / ntp 4.2.2 4.2.2.x
ntp / ntp 4.2.0 4.2.0.x
ntp / ntp 4.0.98 4.0.98.x
ntp / ntp 4.0.72 4.0.72.x
ntp / ntp 4.0.90 4.0.90.x
ntp / ntp 4.0.96 4.0.96.x
ntp / ntp 4.0.93 4.0.93.x
ntp / ntp 4.1.0 4.1.0.x
ntp / ntp 4.1.2 4.1.2.x
ntp / ntp 4.2.5 4.2.5.x
ntp / ntp 4.0.99 4.0.99.x
ntp / ntp 4.0.95 4.0.95.x
ntp / ntp 4.2.2p3 4.2.2p3.x
ntp / ntp 4.2.2p2 4.2.2p2.x
ntp / ntp 4.0.92 4.0.92.x
ntp / ntp 4.0.73 4.0.73.x
ntp / ntp 4.0.97 4.0.97.x
ntp / ntp 4.0.91 4.0.91.x
ntp / ntp 4.2.2p1 4.2.2p1.x
ntp / ntp 4.0.94 4.0.94.x