PublicDateAtUSN: 2017-01-13
Candidate: CVE-2016-7433
PublicDate: 2017-01-13 16:59:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7433
 https://ubuntu.com/security/notices/USN-3349-1
Description:
 NTP before 4.2.8p9 does not properly perform the initial sync calculations,
 which allows remote attackers to unspecified impact via unknown vectors,
 related to a "root distance that did not include the peer dispersion."
Ubuntu-Description:
Notes:
 mdeslaur> ntp-4.2.7p385, up to but not including ntp-4.2.8p9, and
 mdeslaur> ntp-4.3.0 up to, but not including ntp-4.3.94. But the
 mdeslaur> root-distance calculation in general is incorrect in all
 mdeslaur> versions of ntp-4 until this release.
 leosilva> for precise it's not needed since this issue seems to
 leosilva> be caused by some regression and precise hasn't the
 leosilva> code affect changed.
 mdeslaur> trusty isn't vulnerable either
Bugs:
 http://support.ntp.org/bin/view/Main/NtpBug3067
 http://bugs.ntp.org/show_bug.cgi?id=2085
Priority: medium
Discovered-by: Brian Utterback, Sharon Goldberg and Aanchal Malhotra
Assigned-to:
CVSS:
 nvd: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L [5.3 MEDIUM]

Patches_ntp:
 vendor: https://git.centos.org/blob/rpms!ntp.git/4eb1db127a6177011bd913bf4f446e8f701179d6/SOURCES!ntp-4.2.6p5-cve-2016-7433.patch
upstream_ntp: released (1:4.2.8p9+dfsg-1, ntp-4.2.8p9)
precise_ntp: ignored (reached end-of-life)
precise/esm_ntp: not-affected
trusty_ntp: not-affected
trusty/esm_ntp: not-affected
vivid/stable-phone-overlay_ntp: ignored (reached end-of-life)
vivid/ubuntu-core_ntp: DNE
xenial_ntp: released (1:4.2.8p4+dfsg-3ubuntu5.5)
esm-infra/xenial_ntp: released (1:4.2.8p4+dfsg-3ubuntu5.5)
yakkety_ntp: released (1:4.2.8p8+dfsg-1ubuntu2.1)
zesty_ntp: not-affected (1:4.2.8p9+dfsg-2ubuntu1)
devel_ntp: not-affected (1:4.2.8p9+dfsg-2ubuntu1)