NTP BUG 1532: DRDoS / Amplification Attack using ntpdc monlist command

Last update: February 11, 2022 20:40 UTC (b87954544)


Summary

Resolved 24 Apr 2010
References Bug 1532 CVE-2013-5211
Affects All releases prior to 4.2.7p26. Resolved in 4.2.7p26.

Description

Unrestricted access to the monlist feature in ntp_request.c in ntpd in NTP before 4.2.7p26 allows remote attackers to cause a denial of service (traffic amplification) via forged REQ_MON_GETLIST or REQ_MON_GETLIST_1 requests, as exploited in the wild in December 2013.


Mitigation


Credit


Timeline