Improper Authentication Affecting librbd1 package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.29% (69th percentile)

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  • Snyk IDSNYK-RHEL7-LIBRBD1-5252078
  • published1 Nov 2021
  • disclosed14 Apr 2021

Introduced: 14 Apr 2021

CVE-2021-20288  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 librbd1.

NVD Description

Note: Versions mentioned in the description apply only to the upstream librbd1 package and not the librbd1 package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Scores

version 3.1