CVE-2021-3917

low-risk
Published 2022-08-23

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.

Do I need to act?

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0.11% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
LOCAL / LOW complexity

Affected Products (1)

Coreos-Installer

Affected Vendors

Redhat

References (8)

Patch https://access.redhat.com/security/cve/CVE-2021-3917
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2018478
Patch https://github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b7...
Issue Tracking https://github.com/coreos/fedora-coreos-tracker/issues/889
Patch https://access.redhat.com/security/cve/CVE-2021-3917
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2018478
Patch https://github.com/coreos/coreos-installer/commit/2a36405339c87b16ed6c76e91ad5b7...
Issue Tracking https://github.com/coreos/fedora-coreos-tracker/issues/889
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal