Bug 1646386 (CVE-2018-16852) - CVE-2018-16852 samba: NULL pointer de-reference in Samba AD DC DNS management server
Summary: CVE-2018-16852 samba: NULL pointer de-reference in Samba AD DC DNS management...
Alias: CVE-2018-16852
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1654092
Blocks: 1646387
TreeView+ depends on / blocked
Reported: 2018-11-05 13:43 UTC by Laura Pardo
Modified: 2021-02-16 22:49 UTC (History)
30 users (show)

Fixed In Version: samba 4.9.3
Doc Type: If docs needed, set a value
Doc Text:
A null pointer dereference flaw was found in the Samba DNS Management server when used as an Active Directory Domain Controller. A remote attacker could use this flaw to cause a denial of service (application crash).
Clone Of:
Last Closed: 2018-11-28 07:32:38 UTC

Attachments (Terms of Use)

Description Laura Pardo 2018-11-05 13:43:00 UTC
A flaw was found in samba versions from 4.9.0. During the processing of an DNS zone in the DNS management DCE/RPC server, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. This could lead to a Denial of Service attack.

Comment 2 Sam Fowler 2018-11-28 02:57:27 UTC
External Reference:


Comment 3 Sam Fowler 2018-11-28 02:57:38 UTC

Name: The Samba Team
Upstream: Fabrizio Faganello

Comment 4 Sam Fowler 2018-11-28 02:58:08 UTC
Created samba tracking bugs for this issue:

Affects: fedora-29 [bug 1654092]

Comment 5 Huzaifa S. Sidhpurwala 2018-11-28 07:32:54 UTC

This flaw does not affect the version of samba shipped with Red Hat Enterprise Linux because there is no support for samba as Active Directory Domain Controller.

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