Incorrect authorization in OpenStack Keystone - CVE-2021-3563
Published: June 22, 2023
Vulnerability identifier: #VU77633
CSH Severity: Medium
CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-3563
CWE-ID: CWE-863
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass security restrictions.
The vulnerability exists due to only the first 72 characters of an application secret are verified. A remote attacker can gain unauthorized access to bypass security restrictions.
Affected software
OpenStack Keystone
Spectrum Discover
Ubuntu
keystone (Ubuntu package)
Spectrum Discover
Ubuntu
keystone (Ubuntu package)
How to mitigate CVE-2021-3563
Install updates from vendor's website.
Spectrum Discover - addressed in versions 2.0.4.8, 2.1.1
keystone (Ubuntu package) - update to 2:21.0.1-0ubuntu2.1
keystone (Ubuntu package) - update to 2:21.0.1-0ubuntu2.1