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Cisco NX-OS: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016 (Multiple CVEs)

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Cisco NX-OS: Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016 (Multiple CVEs)

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:P)
Published
04/28/2016
Created
07/25/2018
Added
01/05/2017
Modified
05/07/2018

Description

An attacker can spoof a packet from a legitimate ntpd server with an origin timestamp that matches the peer->dst timestamp recorded for that server. After making this switch, the client in NTP 4.2.8p4 and earlier and NTPSec aa48d001683e5b791a743ec9c575aaf7d867a2b0c will reject all future legitimate server responses. It is possible to force the victim client to move time after the mode has been changed. ntpq gives no indication that the mode has been switched.

Solution(s)

  • update-nxos

References

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