CVE-2018-16852
4.4
MEDIUM
CVSS 3.1
EPSS 2.9%
Description
Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service.
How to fix CVE-2018-16852
To remediate CVE-2018-16852, upgrade the affected package to a fixed version below.
- —upgrade to 2:4.9.2+dfsg-2 or later
Is CVE-2018-16852 being exploited?
Low — EPSS is 2.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2:4.9.2+dfsg-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.4 | CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H |