CVE-2016-7426
Published: 13 January 2017
NTP before 4.2.8p9 rate limits responses received from the configured sources when rate limiting for all associations is enabled, which allows remote attackers to cause a denial of service (prevent responses from the sources) by sending responses with a spoofed source address.
Notes
| Author | Note |
|---|---|
| tyhicks | "Affects ntp-4.2.5p203, up to but not including ntp-4.2.8p9, and ntp-4.3.0 up to, but not including ntp-4.3.94." |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
ntp Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(1:4.2.8p9+dfsg-2ubuntu1)
|
| bionic |
Not vulnerable
(1:4.2.8p9+dfsg-2ubuntu1)
|
|
| cosmic |
Not vulnerable
(1:4.2.8p9+dfsg-2ubuntu1)
|
|
| precise |
Released
(1:4.2.6.p3+dfsg-1ubuntu3.12)
|
|
| trusty |
Released
(1:4.2.6.p5+dfsg-3ubuntu2.14.04.11)
|
|
| upstream |
Released
(1:4.2.8p9+dfsg-1)
|
|
| 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-2016-7426.patch |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |