CVE-2018-16852 Information

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.

CVSS Vector

CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.securityfocus.com/bid/106024 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16852 https://security.gentoo.org/glsa/202003-52 https://security.netapp.com/advisory/ntap-20181127-0001/ https://www.samba.org/samba/security/CVE-2018-16852.html

Attack Complexity

HIGH

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

4.4