Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
From VID-9CA85B7C-1B31-11EB-8762-005056A311D1:
The Samba Team reports:
CVE-2020-14318: Missing handle permissions check in SMB1/2/3 ChangeNotify
CVE-2020-14323: Unprivileged user can crash winbind
CVE-2020-14383: An authenticated user can crash the DCE/RPC DNS with easily crafted records
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