CVE-2021-20319
First published: Thu Oct 07 2021(Updated: )
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.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/coreos-installer | <0.10.1 | 0.10.1 |
| Redhat Coreos-installer | <0.10.1 |
Remedy
https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89
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Reference Links
- 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/show_bug.cgi?id=2013108
- https://access.redhat.com/errata/RHSA-2021:3934
- https://access.redhat.com/security/cve/cve-2021-20319
- https://access.redhat.com/errata/RHSA-2021:3926
- https://access.redhat.com/errata/RHSA-2021:3930
- https://access.redhat.com/errata/RHSA-2021:4008
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- vendor/redhat
- canonical/redhat coreos-installer
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