CVE Published: 25/11/2024 |
CVE Updated: 27/11/2024 |
CVE Year: 2024 Source: redhat |
Vendor: Red Hat |
Product: Red Hat build of Keycloak 24 Status : PUBLISHED
CVE-2024-9666 Description
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.