Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2021-20319

Improper Verification of Cryptographic Signature

Published: Mar 04, 2022 | Modified: Mar 11, 2022
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Ubuntu
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-20319
CWEhttps://cwe.mitre.org/data/definitions/347.html

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.

Weakness

The product does not verify, or incorrectly verifies, the cryptographic signature for data.

Affected Software

Name Vendor Start Version End Version
Coreos-installer Redhat * 0.10.1 (excluding)
Red Hat OpenShift Container Platform 4.6 RedHat coreos-installer-0:0.6.0-4.rhaos4.6.el8 *
Red Hat OpenShift Container Platform 4.7 RedHat coreos-installer-0:0.8.0-4.rhaos4.7.el8 *
Red Hat OpenShift Container Platform 4.8 RedHat coreos-installer-0:0.9.0-7.rhaos4.8.el8 *
Red Hat OpenShift Container Platform 4.9 RedHat coreos-installer-0:0.10.1-1.rhaos4.9.el8 *

References

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