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NTP < 4.2.8p15 DoS Vulnerability
Information
Severity
Severity
Medium
Family
Family
General
CVSSv2 Base
CVSSv2 Base
4.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:S/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
2 years ago
Modified
Modified
2 years ago
Summary
Systems that use a CMAC algorithm in ntp.keys will not release a bit of memory on each packet that uses a CMAC keyid, eventually causing ntpd to run out of memory and fail. The CMAC cleanup introduced a bug whereby the CMAC data structure was no longer completely removed.
Insight
Insight
Please see the references for more information on the vulnerabilities.
Affected Software
Affected Software
NTPd version prior to 4.2.8p15, 4.3.x prior to version 4.3.101.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 4.2.8p15, 4.3.101 or later.