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CVE-2021-3917

coreos-installer: restrict access permissions on /boot/ignition{,/config.ign}

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.

CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Coreos-installer Openshift
CVE-2021-20319

coreos-installer: incorrect signature verification on gzip-compressed install images

An improper signature verification vulnerability was found in coreos-installer. A specially crafted gzip installation image can bypass the image signature verification and as a consequence can lead to the installation of unsigned content. An attacker able to modify the original installation image can write arbitrary data, and achieve full access to the node being installed.

CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Vendors
Redhat
Products
Coreos-installer Openshift