NULL Pointer Dereference Affecting samba package, versions <2:4.9.2+dfsg-2


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.72% (82nd percentile)

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  • Snyk IDSNYK-DEBIAN10-SAMBA-357563
  • published2 Dec 2018
  • disclosed28 Nov 2018

Introduced: 28 Nov 2018

CVE-2018-16852  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Debian:10 samba to version 2:4.9.2+dfsg-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.