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CVE-2013-5211

Publication date 2 January 2014

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

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 (1) REQ_MON_GETLIST or (2) REQ_MON_GETLIST_1 requests, as exploited in the wild in December 2013.

Read the notes from the security team

Status

Package Ubuntu Release Status
ntp 13.10 saucy Ignored
13.04 raring Ignored
12.10 quantal Ignored
12.04 LTS precise Ignored
10.04 LTS lucid Ignored

Notes

mdeslaur

default ntp.conf in Ubuntu contains noquery, so monlist is disabled by default. Sites that need monlist should restrict it from known trusted IPs. Upstream has removed monlist in favour of mrulist. This is too intrusive to backport, so we're going to ignore this.