SB2023030251 - User impersonation in Keycloak

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2023030251

SB2023030251 - User impersonation in Keycloak

Published: March 2, 2023 Updated: May 31, 2024

Security Bulletin ID SB2023030251
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Authentication bypass using an alternate path or channel (CVE-ID: CVE-2023-0264)

CWE-ID: CWE-288 - Authentication Bypass Using an Alternate Path or Channel

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green


The vulnerability allows a remote user to impersonate application users.

The vulnerability exists due to an error when handling authentication requests in the OpenID Connect user authentication. A remote authenticated user who can obtain a certain piece of info from a victim's user request from the same realm can use that data to impersonate the victim and generate new session tokens.


Remediation

Install update from vendor's website.

References