Input validation error in Keycloak - CVE-2024-9666
Published: November 25, 2024
Vulnerability identifier: #VU100909
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-9666
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of HTTP proxy headers. When Keycloak is configured to accept incoming proxy headers, it may accept non-IP values, such as obfuscated identifiers, without proper validation. This can lead to costly DNS resolution operations, which an attacker could exploit to tie up IO threads and potentially cause a denial of service.
Affected software
Keycloak
IBM Business Automation Manager Open Editions
Red Hat build of Keycloak
IBM Business Automation Manager Open Editions
Red Hat build of Keycloak
How to mitigate CVE-2024-9666
Install updates from vendor's website.
Keycloak - update to 26.0.6
IBM Business Automation Manager Open Editions - update to 9.2.1
Red Hat build of Keycloak - addressed in versions 24.0.9, 26.0.6
IBM Business Automation Manager Open Editions - update to 9.2.1
Red Hat build of Keycloak - addressed in versions 24.0.9, 26.0.6
External References
Related Security Bulletins
- Multiple vulnerabilities in Keycloak
- Multiple vulnerabilities in Red Hat build of Keycloak 24.0
- Multiple vulnerabilities in Red Hat build of Keycloak 24.0
- Multiple vulnerabilities in Red Hat build of Keycloak 26.0
- Multiple vulnerabilities in Red Hat build of Keycloak 26.0
- Multiple vulnerabilities in IBM Business Automation Manager Open Editions