CVE-2016-7433
Published: 13 January 2017
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."
Notes
Author | Note |
---|---|
mdeslaur | ntp-4.2.7p385, up to but not including ntp-4.2.8p9, and ntp-4.3.0 up to, but not including ntp-4.3.94. But the root-distance calculation in general is incorrect in all versions of ntp-4 until this release. |
leosilva | for precise it's not needed since this issue seems to be caused by some regression and precise hasn't the code affect changed. |
mdeslaur | trusty isn't vulnerable either |
Priority
Status
Package | Release | Status |
---|---|---|
ntp Launchpad, Ubuntu, Debian |
precise |
Ignored
(end of life)
|
trusty |
Not vulnerable
|
|
upstream |
Released
(1:4.2.8p9+dfsg-1, ntp-4.2.8p9)
|
|
xenial |
Released
(1:4.2.8p4+dfsg-3ubuntu5.5)
|
|
yakkety |
Released
(1:4.2.8p8+dfsg-1ubuntu2.1)
|
|
zesty |
Not vulnerable
(1:4.2.8p9+dfsg-2ubuntu1)
|
|
Patches: vendor: https://git.centos.org/blob/rpms!ntp.git/4eb1db127a6177011bd913bf4f446e8f701179d6/SOURCES!ntp-4.2.6p5-cve-2016-7433.patch |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.3 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | Low |
Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |