SB2023011260 - Authorization bypass in Keycloak
Published: January 12, 2023
Security Bulletin ID
SB2023011260
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Authorization (CVE-ID: CVE-2023-0091)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: 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/E:U/U:Green
The vulnerability allows a remote attacker to gain unauthorized access to the application.
The vulnerability exists due to missing authorization of a revoked token in the client-registration endpoints. A remote attacker with ability to obtain a revoked token gain unauthorized access to the application.
Remediation
Install update from vendor's website.