CVE-2018-7170
Publication date 6 March 2018
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
ntpd in ntp 4.2.x before 4.2.8p7 and 4.3.x before 4.3.92 allows authenticated users that know the private symmetric key to create arbitrarily-many ephemeral associations in order to win the clock selection of ntpd and modify a victim's clock via a Sybil attack. This issue exists because of an incomplete fix for CVE-2016-1549.
Status
Package | Ubuntu Release | Status |
---|---|---|
ntp | 24.10 oracular | Not in release |
24.04 LTS noble | Not in release | |
22.04 LTS jammy |
Fixed 1:4.2.8p11+dfsg-1ubuntu1
|
|
20.04 LTS focal |
Fixed 1:4.2.8p11+dfsg-1ubuntu1
|
|
18.04 LTS bionic |
Vulnerable
|
|
16.04 LTS xenial |
Vulnerable
|
|
14.04 LTS trusty | Ignored end of ESM support, was needed |
Patch details
Severity score breakdown
Parameter | Value |
---|---|
Base score | 5.3 · Medium |
Attack vector | Network |
Attack complexity | High |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N |