Medium severity · published Nov 28, 2018
CVE-2018-16852
Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference
4.4
CVSS
2.2%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SA
Samba · Samba
4.9.0 before 4.9.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-16852
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-16852
Third Party Advisory
http://www.securityfocus.com/bid/106024
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16852
security.gentoo.org
https://security.gentoo.org/glsa/202003-52
Third Party Advisory
https://security.netapp.com/advisory/ntap-20181127-0001/
Patch
https://www.samba.org/samba/security/CVE-2018-16852.html
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