CVE-2009-3563
Medium
Description
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.
SeverityMedium
CVSS6.4
Exploit probability—
ProductNtp
PublishedDec 9, 2009
First seenDec 9, 2009
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ntp ntp | v ≤ 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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