What’s Vulnerable › Vulnerabilities
CVE-2021-3979
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.6% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2022-08-25 · updated 2026-06-17
- Weakness: CWE-327
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.
Affected products
- Fedoraproject Fedora: 35, 37
- Red Hat Ceph Storage: 3.0, 4.3, 5.1, 4.0, 5.0
- RedHat Ceph Storage For Ibm Z Systems: 4.0
- RedHat Ceph Storage For Power: 4.0
- RedHat Openshift Container Storage: 4.0
- Red Hat Openshift Data Foundation 4.22: 4.0
- nova_libvirt container provided by the Red Hat OpenStack Platform: 13.0
References
- https://access.redhat.com/security/cve/CVE-2021-3979
- https://bugzilla.redhat.com/show_bug.cgi?id=2024788
- https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656
- https://github.com/ceph/ceph/pull/44765
- https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPOK44BESMIFW6BIOGCN452AKKOIIT6Q/
- https://tracker.ceph.com/issues/54006
- https://access.redhat.com/security/cve/CVE-2021-3979
- https://bugzilla.redhat.com/show_bug.cgi?id=2024788
- https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656
- https://github.com/ceph/ceph/pull/44765
- https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html
Get alerted when CVE-2021-3979 or the next vulnerability affects your stack