What’s Vulnerable › Vulnerabilities

CVE-2019-8936

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-05-15 · updated 2026-06-17
• Weakness: CWE-476

Description

NTP through 4.2.8p12 has a NULL Pointer Dereference.

Affected products

• Fedoraproject Fedora: 28, 29, 30
• HPE Hpux-Ntp: before c.4.2.8.4.0 — fixed in c.4.2.8.4.0
• Clustered Data ONTAP: before 9.2 — fixed in 9.2
• NetApp Data ONTAP operating in 7-Mode: all versions
• NTP: before 4.2.8; 4.2.8, 4.2.8-p1, 4.2.8-p1-beta1, 4.2.8-p1-beta2, 4.2.8-p1-beta3, 4.2.8-p1-beta4 (+20) — fixed in 4.2.8
• openSUSE Leap: 15.0, 42.3

How to fix

Upgrade to a fixed version: HPE Hpux-Ntp c.4.2.8.4.0; Clustered Data ONTAP 9.2; NTP 4.2.8. Check the vendor advisory for mitigations.

References

• http://bugs.ntp.org/show_bug.cgi?id=3565
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00032.html
• http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00036.html
• http://packetstormsecurity.com/files/152915/FreeBSD-Security-Advisory-FreeBSD-SA-19-04.ntp.html
• http://support.ntp.org/bin/view/Main/SecurityNotice
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NVS2CSG2TQ663CXOZZUJN4STQPMENNP/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JBGXY7OKWOLT6X6JAPVZRFEP4FLCGGST/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KQDNHNYOJK2SRSGO23GQ2RXTOUY2HLNN/
• https://seclists.org/bugtraq/2019/May/39
• https://security.FreeBSD.org/advisories/FreeBSD-SA-19:04.ntp.asc
• https://security.gentoo.org/glsa/201903-15
• https://security.netapp.com/advisory/ntap-20190503-0001/

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