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CVE-2021-3979

Published: 25 August 2022

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.

Notes

AuthorNote
mdeslaur
This is fixed in 15.2.16-0ubuntu0.20.04.1 in focal-updates, but
is not yet in focal-security.

Priority

Low

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
ceph
Launchpad, Ubuntu, Debian
jammy Not vulnerable
(17.1.0-0ubuntu3)
kinetic Not vulnerable
(17.2.0-0ubuntu1)
lunar Not vulnerable
(17.2.0-0ubuntu1)
trusty Needs triage

xenial Needs triage

hirsute Ignored
(end of life)
upstream
Released (16.2.9+ds-1)
impish Ignored
(end of life)
bionic
Released (12.2.13-0ubuntu0.18.04.11)
focal
Released (15.2.17-0ubuntu0.20.04.3)
mantic Not vulnerable
(17.2.0-0ubuntu1)
Patches:
redhat: https://www.openwall.com/lists/oss-security/2022/01/12/5/1
upstream: https://github.com/ceph/ceph/pull/44765
upstream: https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656 (main)
upstream: https://github.com/ceph/ceph/commit/f69339e00f582ec64b843ff58b66817975fca0d7 (16.2.8)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N