Vulnerability Description
A key length flaw was found in Red Hat Ceph Storage. An attacker can exploit the fact that the key length is incorrectly passed in an encryption algorithm to create a non random key, which is weaker and can be exploited for loss of confidentiality and integrity on encrypted disks.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Redhat | Ceph Storage | 3.0 |
| Redhat | Openshift Container Storage | 4.0 |
| Redhat | Openshift Data Foundation | 4.0 |
| Redhat | Openstack Platform | 13.0 |
| Redhat | Ceph Storage For Ibm Z Systems | 4.0 |
| Redhat | Ceph Storage For Power | 4.0 |
| Redhat | Enterprise Linux | 8.0 |
| Fedoraproject | Fedora | 35 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/security/cve/CVE-2021-3979Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2024788Issue TrackingVendor Advisory
- https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656PatchThird Party Advisory
- https://github.com/ceph/ceph/pull/44765PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing List
- https://tracker.ceph.com/issues/54006Issue TrackingVendor Advisory
- https://access.redhat.com/security/cve/CVE-2021-3979Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2024788Issue TrackingVendor Advisory
- https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656PatchThird Party Advisory
- https://github.com/ceph/ceph/pull/44765PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html
- https://lists.debian.org/debian-lts-announce/2025/09/msg00025.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing List
- https://tracker.ceph.com/issues/54006Issue TrackingVendor Advisory
FAQ
What is CVE-2021-3979?
CVE-2021-3979 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A key length flaw was found in Red Hat Ceph Storage. An attacker can exploit the fact that the key length is incorrectly passed in an encryption algorithm to create a non random key, which is weaker a...
How severe is CVE-2021-3979?
CVE-2021-3979 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3979?
Check the references section above for vendor advisories and patch information. Affected products include: Redhat Ceph Storage, Redhat Openshift Container Storage, Redhat Openshift Data Foundation, Redhat Openstack Platform, Redhat Ceph Storage For Ibm Z Systems.