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Advisory Published
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CVE Published
Updated

CVE-2009-3563

First published: Tue Oct 27 2009(Updated: )

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.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
redhat/ntp<0:4.1.2-6.el3
0:4.1.2-6.el3
redhat/ntp<0:4.2.0.a.20040617-8.el4_8.1
0:4.2.0.a.20040617-8.el4_8.1
redhat/ntp<0:4.2.2p1-9.el5_4.1
0:4.2.2p1-9.el5_4.1
NTP ntp<=4.2.2p4
NTP ntp=4.0.72
NTP ntp=4.0.73
NTP ntp=4.0.90
NTP ntp=4.0.91
NTP ntp=4.0.92
NTP ntp=4.0.93
NTP ntp=4.0.94
NTP ntp=4.0.95
NTP ntp=4.0.96
NTP ntp=4.0.97
NTP ntp=4.0.98
NTP ntp=4.0.99
NTP ntp=4.1.0
NTP ntp=4.1.2
NTP ntp=4.2.0
NTP ntp=4.2.2
NTP ntp=4.2.2p1
NTP ntp=4.2.2p2
NTP ntp=4.2.2p3
NTP ntp=4.2.5
<=4.2.2p4
=4.0.72
=4.0.73
=4.0.90
=4.0.91
=4.0.92
=4.0.93
=4.0.94
=4.0.95
=4.0.96
=4.0.97
=4.0.98
=4.0.99
=4.1.0
=4.1.2
=4.2.0
=4.2.2
=4.2.2p1
=4.2.2p2
=4.2.2p3
=4.2.5

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