CVE-2021-3979

6.5 MEDIUM
Published: August 25, 2022 Modified: November 03, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-3979
Source: secalert@redhat.com
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2024788
Source: secalert@redhat.com
Issue Tracking Vendor Advisory
https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656
Source: secalert@redhat.com
Patch Third Party Advisory
https://github.com/ceph/ceph/pull/44765
Source: secalert@redhat.com
Patch Third Party Advisory
https://tracker.ceph.com/issues/54006
Source: secalert@redhat.com
Issue Tracking Vendor Advisory
https://access.redhat.com/security/cve/CVE-2021-3979
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2024788
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Vendor Advisory
https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Third Party Advisory
https://github.com/ceph/ceph/pull/44765
Source: af854a3a-2127-422b-91ae-364da2661108
Patch Third Party Advisory
https://tracker.ceph.com/issues/54006
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Vendor Advisory

15 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.2%
48th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

fedoraproject redhat