Description
NTP through 4.2.8p12 has a NULL Pointer Dereference.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 11 | ntp | 1:4.2.8p12+dfsg-4 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 22.04 LTS | ntp | 1:4.2.8p12+dfsg-3ubuntu6 | — |
| Ubuntu 20.04 LTS | ntp | 1:4.2.8p12+dfsg-3ubuntu4.20.04.1 | USN-4563-2 |
| Ubuntu 18.04 LTS | ntp | 1:4.2.8p10+dfsg-5ubuntu7.3 | USN-4563-1 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 | ntp | 4.2.8p13-4.6.1 | SUSE-SU-2019:0777-1 |
| SLES 12 SP4 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SLES 12 SP3 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SLES 12 SP2 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SLES 12 SP1 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | ntp | 4.2.8p13-46.32.1 | SUSE-SU-2019:0775-1 |
| SLES 11 SP4 | ntp | 4.2.8p13-64.13.1 | SUSE-SU-2019:13991-1 |
| SLES for SAP 12 SP4 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SLES for SAP 12 SP3 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SLES for SAP 12 SP2 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SLES for SAP 12 SP1 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SLES for SAP 11 SP4 | ntp | 4.2.8p13-64.13.1 | SUSE-SU-2019:13991-1 |
| SUSE OpenStack Cloud 7 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
| SUSE Linux Enterprise Point of Sale 11 SP3 | ntp | 4.2.8p13-48.27.1 | SUSE-SU-2019:14004-1 |
| SUSE Enterprise Storage 4 | ntp | 4.2.8p13-85.1 | SUSE-SU-2019:0789-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | ntp | 4.2.8p15-7.2 | openSUSE-SU-2024:11102-1 |
| openSUSE Leap 15.0 | ntp | 4.2.8p13-lp150.8.1 | openSUSE-SU-2019:1143-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 1 repository
-
snappyJack/CVE-2019-8936 ★ 0 · Apr 26, 2020
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 10
- USN-4563-1 ntp vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-4563-2 ntp vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2019:14004-1 Security update for ntp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11102-1 ntp-4.2.8p15-7.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:13991-1 Security update for ntp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0775-1 Security update for ntp SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2019:1143-1 Security update for ntp SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2019:0777-1 Security update for ntp SUSE / openSUSE Security Updates · May 2, 2025
- SUSE-SU-2019:0789-1 Security update for ntp SUSE / openSUSE Security Updates · May 2, 2025
- VDE-2022-032 AUMA: Multiple Vulnerabilities in Automation Runtime NTP Service CERT@VDE · Aug 9, 2022
References
- GLSA-201903-15 vendor-advisory
- http://support.ntp.org/bin/view/Main/SecurityNotice
- openSUSE-SU-2019:1143 vendor-advisory
- openSUSE-SU-2019:1158 vendor-advisory
- FEDORA-2019-b0c7f0d94a vendor-advisory
- FEDORA-2019-694e3aa4e8 vendor-advisory
- FEDORA-2019-f781d5c4c6 vendor-advisory
- https://security.netapp.com/advisory/ntap-20190503-0001/
- FreeBSD-SA-19:04 vendor-advisory
- 20190515 FreeBSD Security Advisory FreeBSD-SA-19:04.ntp mailing-list
- http://bugs.ntp.org/show_bug.cgi?id=3565
- http://packetstormsecurity.com/files/152915/FreeBSD-Security-Advisory-FreeBSD-SA-19-04.ntp.html
- https://support.f5.com/csp/article/K61363039
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us
- USN-4563-1 vendor-advisory