CVE-2019-8936
Published: 15 May 2019
NTP through 4.2.8p12 has a NULL Pointer Dereference.
From the Ubuntu Security Team
It was discovered that the fix for CVE-2018-7182 introduced a NULL pointer dereference into NTP. An attacker could use this vulnerability to cause a denial of service (crash).
Notes
| Author | Note |
|---|---|
| leosilva | issue was introduced with the fix from CVE-2018-7182 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
ntp Launchpad, Ubuntu, Debian |
bionic |
Released
(1:4.2.8p10+dfsg-5ubuntu7.3)
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Released
(1:4.2.8p12+dfsg-3ubuntu4.20.04.1)
|
|
| groovy |
Released
(1:4.2.8p12+dfsg-3ubuntu4.20.10.1)
|
|
| hirsute |
Released
(1:4.2.8p12+dfsg-3ubuntu4.1)
|
|
| impish |
Released
(1:4.2.8p12+dfsg-3ubuntu6)
|
|
| jammy |
Released
(1:4.2.8p12+dfsg-3ubuntu6)
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(1:4.2.8p13-1)
|
|
| xenial |
Not vulnerable
|
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 |
References
- http://bugs.ntp.org/show_bug.cgi?id=3565
- http://bk.ntp.org/ntp-stable/ntpd/ntp_control.c?PAGE=diffs&REV=5c8106e7wWtXdh0lzg1ytlWribBTcQ
- https://ubuntu.com/security/notices/USN-4563-1
- https://ubuntu.com/security/notices/USN-4563-2
- https://www.cve.org/CVERecord?id=CVE-2019-8936
- NVD
- Launchpad
- Debian