Vulnerability in Red Hat Coreos-Installer
CVE-2021-3917
A flaw was found in the coreos-installer, where it writes the Ignition config to the target system with world-readable access permissions. This flaw allows a local attacker to have read access to potentially sensitive data. The highest threat from this vulnerability is to confidentiality.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.002 (12.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Red Hat Coreos-Installer
- Coreos-Installer — versions Fixed in coreos-installer 0.10.0
Weakness classification (CWE)
References
- github.com/coreos/fedora-coreos-tracker/issues/889 (Patch, Third Party Advisory, Issue Tracking)
- github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b76638fbd… (Patch, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2021-3917 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-3917?
- CVE-2021-3917 is a medium-severity vulnerability in Red Hat Coreos-Installer, classified under Incorrect Default Permissions. CVSS score: 5.5/10. Published 2022-08-23.
- How severe is CVE-2021-3917?
- Medium severity. CVSS v3 base score is 5.5 out of 10.