CVE-2018-1113

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.

Categories

4.8
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: [UNKNOWN] setup
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2018:3249 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1113 issue tracking vendor advisory
https://access.redhat.com/errata/RHBA-2019:0327 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-1113?
CVE-2018-1113 has been scored as a medium severity vulnerability.
How to fix CVE-2018-1113?
To fix CVE-2018-1113, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-1113 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-1113 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-1113?
CVE-2018-1113 affects [UNKNOWN] setup.
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