CVE-2021-20288

ceph: Unauthorized global_id reuse in cephx

Published Apr 15, 2021 CVSS 3.1 · 7.2 High EPSS 2.1% KEV · Not listed
Description
An authentication flaw was found in ceph in versions before 14.2.20. When the monitor handles CEPHX_GET_AUTH_SESSION_KEY requests, it doesn't 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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Debian DLA Debian DLA DLA-3629-1 ceph security update
Ubuntu USN Ubuntu USN USN-4998-1 Ceph vulnerabilities
Ubuntu USN Ubuntu USN USN-5128-1 Ceph vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 3, 2024, 5:37 PM
Reserved
Dec 17, 2020, 12:00 AM
Status
Modified
Published
Apr 15, 2021, 3:15 PM
Modified
Jun 17, 2026, 3:33 AM
Severity
Important
Public date
Apr 14, 2021, 12:00 AM