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.
problem types: CWE-285
affected:
{
product: setup
vendor: [UNKNOWN]
versions:
status: affected, version: setup 2.11.4-1.fc28
}
metrics:
cvssV3_0: [
attackComplexity: LOW
attackVector: LOCAL
availabilityImpact: LOW
baseScore: 4.8
baseSeverity: MEDIUM
confidentialityImpact: LOW
integrityImpact: LOW
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: REQUIRED
vectorString: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
version: 3.0
]