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4.7 Medium

CVE-2024-9666 A vulnerability was found in the Keycloak Server

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.

Affected products and versions

Product Affected versions Fixed in
Red Hat build of Keycloak 24 24 earliest → < 24-18 24-18
Red Hat build of Keycloak 24.0.9 Versions not published
Red Hat build of Keycloak 26.0 26.0 earliest → < 26.0-6 26.0-6
Red Hat build of Keycloak 26.0.6 Versions not published
Red Hat JBoss Enterprise Application Platform 8 Versions not published
Red Hat Build of Keycloak Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of Red Hat build of Keycloak 24

The 10 CVEs of Red Hat build of Keycloak 24 →
CVE-2024-10492 A vulnerability was found in Keycloak 2.7 Low CVE-2024-10451 A flaw was found in Keycloak 5.9 Medium CVE-2024-10270 A vulnerability was found in the Keycloak-services package 6.5 Medium CVE-2024-8883 A misconfiguration flaw was found in Keycloak 6.1 Medium
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