CVE-2021-20319

 

Published at: - 04-03-2022 07:15

Last modified: - 11-03-2022 04:37

Total changes: - 3

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593
• https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89
• https://bugzilla.redhat.com/show_bug.cgi?id=2011862

 

Keywords

NVD

 

CVE-2021-20319

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures