CVE-2020-14383: Red Hat Enterprise Linux

Medium severity, CVSS 6.5. EPSS: 2.2% chance of exploitation in the next 30 days.

A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate, but many RPC services will not.

Affected products

• Red Hat Enterprise Linux: version 8.0 only
• Samba Samba: from 4.0.0, before 4.11.15 (fixed in 4.11.15); from 4.12.0, before 4.12.9 (fixed in 4.12.9); from 4.13.0, before 4.13.1 (fixed in 4.13.1)

Published 2020-12-02. Last modified 2026-06-17.