Friday, October 29, 2021

Red Hat 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.
  • linuxrpm-upgrade-coreos-installer

  • References
  • CVE - 2021-20319
  • RHSA-2021:3926
  • RHSA-2021:3930
  • RHSA-2021:3934


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