CVE-2018-16852

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 6.75% Top 10%
Vendor Advisory gentoo.org Vendor Advisory samba.org
Affected: [UNKNOWN] samba
Published at:
Updated at:

References

Link Tags
https://www.samba.org/samba/security/CVE-2018-16852.html patch vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16852 issue tracking third party advisory
https://security.netapp.com/advisory/ntap-20181127-0001/ third party advisory
http://www.securityfocus.com/bid/106024 vdb entry third party advisory
https://security.gentoo.org/glsa/202003-52 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-16852?
CVE-2018-16852 has been scored as a medium severity vulnerability.
How to fix CVE-2018-16852?
To fix CVE-2018-16852, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-16852 being actively exploited in the wild?
It is possible that CVE-2018-16852 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~7% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-16852?
CVE-2018-16852 affects [UNKNOWN] samba.
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