VULNERABILITY INTELLIGENCE

CVE-2018-1113

CVSS score4.8 MEDIUM
EPSS probability0.32%
CISA KEVNot currently listed
Published2018-07-03
Last modified2026-06-17
CVSS vectorCVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

Description

setup before version 2.11.4-1.fc28 in Fedora and Red Hat Enterprise Linux added /sbin/nologin and /usr/sbin/nologin to /etc/shells. This violates security assumptions made by pam_shells and some daemons which allow access based on a user's shell being listed in /etc/shells. Under some circumstances, users which had their shell changed to /sbin/nologin could still access the system.

Weakness classification

  • CWE-285: Improper Authorization
  • CWE-732: Incorrect Permission Assignment for Critical Resource

Primary references