CVE-2021-3979

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

0.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-08-25 20:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 04:06 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.6% in the next 30 days (EPSS).
• Severity: 6.5 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-08-25 20:15 UTC

Last modified

2026-06-17 04:06 UTC

Exploit probability

0.6% · EPSS, next 30 days

Weakness

CWE-327 · Broken cryptographic algorithm

Record status

Modified

Affected

• Redhat Ceph Storage 3.0
• Redhat Ceph Storage 4.3
• Redhat Ceph Storage 5.1
• 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 4.0

Attack profile CVSS 3.1 · 6.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-3979.md and follow it. Check whether this project is affected by CVE-2021-3979. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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