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NTP: Insufficient Entropy (CVE-2015-3405)

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NTP: Insufficient Entropy (CVE-2015-3405)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
08/09/2017
Created
02/28/2023
Added
02/23/2023
Modified
03/01/2023

Description

ntp-keygen in ntp 4.2.8px before 4.2.8p2-RC2 and 4.3.x before 4.3.12 does not generate MD5 keys with sufficient entropy on big endian machines when the lowest order byte of the temp variable is between 0x20 and 0x7f and not #, which might allow remote attackers to obtain the value of generated MD5 keys via a brute force attack with the 93 possible keys.

Solution(s)

  • ntp-upgrade-latest

References

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