Red Hat JBossEAP: HTTP Request/Response Smuggling (CVE-2024-9666)

Red Hat JBossEAP: HTTP Request/Response Smuggling (CVE-2024-9666)

Severity

4

CVSS

(AV:L/AC:H/Au:S/C:N/I:N/A:C)

Published

11/21/2024

Created

02/04/2025

Added

02/03/2025

Modified

02/03/2025

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.. 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.

Solution(s)

• red-hat-jboss-eap-upgrade-latest

References

• https://attackerkb.com/topics/cve-2024-9666
• CVE - 2024-9666
• https://access.redhat.com/security/cve/CVE-2024-9666
• https://bugzilla.redhat.com/show_bug.cgi?id=2317440