CVE Vulnerabilities

CVE-2021-20288

Improper Authentication

Published: Apr 15, 2021 | Modified: Feb 16, 2024
CVSS 3.x
7.2
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P
RedHat/V2
RedHat/V3
8 IMPORTANT
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Ubuntu
MEDIUM

An authentication flaw was found in ceph in versions before 14.2.20. When the monitor handles CEPHX_GET_AUTH_SESSION_KEY requests, it doesnt sanitize other_keys, allowing key reuse. An attacker who can request a global_id can exploit the ability of any user to request a global_id previously associated with another user, as ceph does not force the reuse of old keys to generate new ones. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

Name Vendor Start Version End Version
Ceph Linuxfoundation * 14.2.21 (excluding)
Red Hat Ceph Storage 3 - ELS RedHat ceph-2:12.2.12-141.el7cp *
Red Hat Ceph Storage 4.2 RedHat ceph-2:14.2.11-181.el8cp *
Ceph Ubuntu bionic *
Ceph Ubuntu devel *
Ceph Ubuntu esm-infra-legacy/trusty *
Ceph Ubuntu esm-infra/bionic *
Ceph Ubuntu esm-infra/xenial *
Ceph Ubuntu focal *
Ceph Ubuntu groovy *
Ceph Ubuntu hirsute *
Ceph Ubuntu impish *
Ceph Ubuntu jammy *
Ceph Ubuntu precise/esm *
Ceph Ubuntu trusty *
Ceph Ubuntu trusty/esm *
Ceph Ubuntu upstream *
Ceph Ubuntu xenial *

Potential Mitigations

References