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CVE-2018-1113

19
FAUCET Score

CVE-2018-1113 is a medium-severity vulnerability affecting Fedora and Red Hat Enterprise Linux, where the setup utility incorrectly added /sbin/nologin and /usr/sbin/nologin to /etc/shells. This misconfiguration allowed users whose shell was set to nologin to potentially bypass security restrictions and gain system access, violating assumptions made by pam_shells and other daemons. The vulnerability has a CVSS score of 5.3, indicating a local attack vector with low complexity and potential for limited impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.11.4CPE matchmatch criteria
cpe:2.3:a:redhat:setup:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.8MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
1.3
Impact Score
3.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
23.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 80th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (4)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: setup-0:2.8.71-10.el7
View patch
redhatvendor investigatingvia nvd_reference
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: setup
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: setup

Vendor Advisories (1)

redhatCVE-2018-1113Low

setup: nologin listed in /etc/shells violates security expectations

Apr 24, 2018

References

access.redhat.com / errata/RHBA-2019:0327
Vendor Advisory
access.redhat.com / errata/RHSA-2018:3249
Vendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingVendor Advisory