VULNERABILITY INTELLIGENCE

CVE-2021-20319

CVSS score7.8 HIGH
EPSS probability0.52%
CISA KEVNot currently listed
Published2022-03-04
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

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 classification

  • secalert@redhat.com: CWE-347
  • nvd@nist.gov: CWE-347

Primary references