CVE-2018-7184
Published: 6 March 2018
ntpd in ntp 4.2.8p4 before 4.2.8p11 drops bad packets before updating the "received" timestamp, which allows remote attackers to cause a denial of service (disruption) by sending a packet with a zero-origin timestamp causing the association to reset and setting the contents of the packet as the most recent timestamp. This issue is a result of an incomplete fix for CVE-2015-7704.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
ntp Launchpad, Ubuntu, Debian |
artful |
Released
(1:4.2.8p10+dfsg-5ubuntu3.3)
|
| bionic |
Released
(1:4.2.8p10+dfsg-5ubuntu7.1)
|
|
| trusty |
Not vulnerable
(1:4.2.6.p5+dfsg-3ubuntu2.14.04.12)
|
|
| upstream |
Released
(4.2.8p11)
|
|
| xenial |
Not vulnerable
(1:4.2.8p4+dfsg-3ubuntu5.8)
|
|
|
Patches: upstream: http://bk.ntp.org/ntp-stable/?PAGE=cset&REV=5a76f46bK1M87GD1tJounOczC-5Zow |
||
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |