CVE-2018-1050: Canonical Ubuntu Linux

Medium severity, CVSS 4.3. EPSS: 6.5% chance of exploitation in the next 30 days.

All versions of Samba from 4.0.0 onwards are vulnerable to a denial of service attack when the RPC spoolss service is configured to be run as an external daemon. Missing input sanitization checks on some of the input parameters to spoolss RPC calls could cause the print spooler service to crash.

Affected products

• Canonical Ubuntu Linux: version 12.04 only; version 14.04 only; version 16.04 only; version 17.10 only
• Debian Debian Linux: version 7.0 only; version 8.0 only; version 9.0 only
• Red Hat Enterprise Linux Desktop: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Server: version 6.0 only; version 7.0 only
• Red Hat Enterprise Linux Workstation: version 6.0 only; version 7.0 only
• Samba Samba: from 3.6.0, before 4.5.16 (fixed in 4.5.16); from 4.6.0, before 4.6.14 (fixed in 4.6.14); from 4.7.0, before 4.7.6 (fixed in 4.7.6)

Published 2018-03-13. Last modified 2026-06-17.