{"cve":"CVE-2021-3979","nvd":{"published":"2022-08-25T20:15:09.473","modified":"2026-06-17T04:06:19.907","status":"Modified","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-287","CWE-327"],"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"],"products":["fedoraproject:fedora","redhat:ceph_storage","redhat:ceph_storage_for_ibm_z_systems","redhat:ceph_storage_for_power","redhat:openshift_container_storage","redhat:openshift_data_foundation","redhat:openstack_platform"],"source":"nvd","synced_at":"2026-10-19T21:35:14.992143698+00:00"},"epss":{"cve":"CVE-2021-3979","score":0.00566,"percentile":0.46981,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}