CVE-2021-3979
MEDIUM
6.5
CVSS Score
Published: August 25, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:06 AM UTC
9 products affected across 3 vendorsFedoraOpenStack PlatformCeph Storage
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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
OpenShift Data Foundation· Red Hatcontainer
95%Enterprise Linux· Red Hatrpmdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory 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.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPOK44BESMIFW6BIOGCN452AKKOIIT6Q/
References (8)
Issue TrackingVendor Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2024788PatchThird Party Advisory
Source: [email protected]
https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656Source: af854a3a-2127-422b-91ae-364da2661108
https://lists.debian.org/debian-lts-announce/2025/09/msg00025.htmlCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- LOW
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-327CWE-287
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