CVE-2009-3563

Severity

64%

Complexity

99%

Confidentiality

81%

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.

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.

CVSS 2.0 Base Score 6.4. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:P/A:P).

Overview

First reported 15 years ago

2009-12-09 18:30:00

Last updated 7 years ago

2017-09-19 01:29:00

Affected Software

NTP 4.0.72

4.0.72

NTP 4.0.73

4.0.73

NTP 4.0.90

4.0.90

NTP 4.0.91

4.0.91

NTP 4.0.92

4.0.92

NTP 4.0.93

4.0.93

NTP 4.0.94

4.0.94

NTP 4.0.95

4.0.95

NTP 4.0.96

4.0.96

NTP 4.0.97

4.0.97

NTP 4.0.98

4.0.98

NTP 4.0.99

4.0.99

NTP 4.1.0

4.1.0

NTP 4.1.2

4.1.2

NTP 4.2.0

4.2.0

NTP 4.2.2

4.2.2

NTP

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