Ceph · Ceph · CVE-2021-20288
**Name of the Vulnerable Software and Affected Versions**
ceph versions prior to 14.2.20
**Description**
The issue is related to a flaw in the authentication procedure of the ceph storage network, which can be exploited by a remote attacker to access confidential data, compromise data integrity, and cause a denial of service. The vulnerability allows key reuse when the monitor handles `CEPHX GET AUTH SESSION KEY` requests, enabling an attacker to request a `global id` previously associated with another user. This poses a significant threat to data confidentiality, integrity, and system availability.
**Recommendations**
For versions prior to 14.2.20, update to version 14.2.20 or later to resolve the issue. As a temporary workaround, consider restricting access to the `CEPHX GET AUTH SESSION KEY` request handler to minimize the risk of exploitation. Additionally, avoid reusing `global id` values associated with other users until the issue is resolved.