What’s Vulnerable › Vulnerabilities

CVE-2018-1113

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-07-03 · updated 2026-06-17
• Weakness: CWE-285

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.

Affected products

• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server: 7.0
• RedHat Enterprise Linux Workstation: 7.0
• RedHat Setup: before 2.11.4 — fixed in 2.11.4

How to fix

Upgrade to a fixed version: RedHat Setup 2.11.4. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/errata/RHBA-2019:0327
• https://access.redhat.com/errata/RHSA-2018:3249
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1113
• https://access.redhat.com/errata/RHBA-2019:0327
• https://access.redhat.com/errata/RHSA-2018:3249
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1113

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