Status: Received - Published on 25-11-2024
A vulnerability was found in the Keycloak Server. The Keycloak Server is vulnerable to a denial of service (DoS) attack due to improper handling of 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 issue can lead to costly DNS resolution operations, which an attacker could exploit to tie up IO threads and potentially cause a denial of service. The attacker must have access to send requests to a Keycloak instance that is configured to accept proxy headers, specifically when reverse proxies do not overwrite incoming headers, and Keycloak is configured to trust these headers.
EPSS
0.00044
EPSS %
0.12035
0.00044
CWE-444
0.00044
secalert@redhat.com
Primary
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Advance your expertise with certifications like Certified Ethical Hacker (CEH) and CISSP ISC2. These certifications equip you with proactive strategies to address vulnerabilities and strengthen your organization's defenses against emerging cyber threats. Gain the tools and certifications to stay ahead of evolving CVE threats.
Join the top cybersecurity professionals safeguarding today's infrastructures.