NULL pointer dereference in Samba
CVE-2018-16852
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Samba
- [Unknown] Samba — versions 4.9.3
Weakness classification (CWE)
References
- www.samba.org/samba/security/CVE-2018-16852.html (Patch, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- security.netapp.com/advisory/ntap-20181127-0001/ (Third Party Advisory)
- www.securityfocus.com/bid/106024 (VDB Entry, Third Party Advisory, vdb-entry)
- security.gentoo.org/glsa/202003-52 (vendor-advisory)
Frequently asked questions
- What is CVE-2018-16852?
- CVE-2018-16852 is a medium-severity vulnerability in Samba, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2018-11-28.
- How severe is CVE-2018-16852?
- Medium severity. CVSS v3 base score is 6.5 out of 10.