Auth bypass in [Unknown] Setup
CVE-2018-1113
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.003 (22.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 22nd percentile — 22.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- [Unknown] Setup — versions setup 2.11.4-1.fc28
- Fedoraproject Fedora
- Red Hat Enterprise Linux
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
- Red Hat Setup
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2018:3249 (vendor-advisory, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- access.redhat.com/errata/RHBA-2019:0327 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-1113?
- CVE-2018-1113 is a medium-severity vulnerability in [Unknown] Setup, classified under Improper Authorization. CVSS score: 4.8/10. Published 2018-07-03.
- How severe is CVE-2018-1113?
- Medium severity. CVSS v3 base score is 4.8 out of 10.