Vulnerability Details CVE-2021-20319
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 28.2%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 6.8
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2011862
- https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89
- https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593
- https://bugzilla.redhat.com/show_bug.cgi?id=2011862
- https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89
- https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593
Products affected by CVE-2021-20319
-
cpe:2.3:a:redhat:coreos-installer:0.10.0