CVE-2024-9666
Vulnerability Scoring
Attack Complexity Details
- Attack Complexity: HIGH IMPACT
- Attack Vector: LOCAL
- Privileges Required: Low Impact
- Scope: UNCHANGED
- User Interaction: NONE
CIA Impact Definition
- Confidentiality:
- Integrity:
- Availability: HIGH IMPACT
CVE-2024-9666 Vulnerability Summary
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.
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Access Complexity Graph for CVE-2024-9666
Impact Analysis for CVE-2024-9666
CVE-2024-9666: Detailed Information and External References
EPSS
0.00042
EPSS %
0.04978
References
0.00042
- https://access.redhat.com/errata/RHSA-2024:10175
- https://access.redhat.com/errata/RHSA-2024:10176
- https://access.redhat.com/errata/RHSA-2024:10177
- https://access.redhat.com/errata/RHSA-2024:10178
- https://access.redhat.com/security/cve/CVE-2024-9666
- https://bugzilla.redhat.com/show_bug.cgi?id=2317440
CWE
CWE-444
CAPEC
0.00042
- HTTP Response Smuggling: An adversary manipulates and injects malicious content in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., server). See CanPrecede relationships for possible consequences. Modification/manipulation of HTTP message headers, request-line and body parameters to disrupt and interfere in the interpretation and parsing of HTTP message lengths/boundaries for consecutive HTTP messages by HTTP agents in a HTTP chain or network path.
- HTTP Request Smuggling: An adversary abuses the flexibility and discrepancies in the parsing and interpretation of HTTP Request messages using various HTTP headers, request-line and body parameters as well as message sizes (denoted by the end of message signaled by a given HTTP header) by different intermediary HTTP agents (e.g., load balancer, reverse proxy, web caching proxies, application firewalls, etc.) to secretly send unauthorized and malicious HTTP requests to a back-end HTTP agent (e.g., web server). See CanPrecede relationships for possible consequences. Modification/manipulation of HTTP message headers, request-line and body parameters to disrupt and interfere in the interpretation and parsing of HTTP message lengths/boundaries for consecutive HTTP messages by HTTP agents in a HTTP chain or network path.
CVSS3 Source
secalert@redhat.com
CVSS3 Type
Primary
CVSS3 Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
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