CVE-2024-8698 Scanner
CVE-2024-8698 Scanner - Privilege Escalation vulnerability in Keycloak
Short Info
Level
Single Scan
Single Scan
Can be used by
Asset Owner
Estimated Time
10 seconds
Time Interval
24 days 20 hours
Scan only one
Domain, IPv4, Subdomain
Toolbox
-
Keycloak is an open-source identity and access management solution released by Red Hat, Inc. It is widely adopted by organizations for its ability to secure applications and services with minimal fuss. Companies rely on Keycloak for single sign-on capabilities, social login functionalities, and user identity brokering across various platforms. In addition to its authentication roles, Keycloak manages user sessions, allowing seamless and secure access across enterprise applications. The software is frequently integrated with systems supporting SAML, OpenID Connect, and OAuth 2.0 protocols. Its versatility extends to hybrid cloud environments and on-premises deployments.
The vulnerability in question affects the SAML Core Package in Keycloak, particularly involving its signature validation mechanism. Due to improper validation logic within the XMLSignatureUtil class, attackers can modify the SAML signature to bypass standard validation checks. This flaw undermines the system's ability to correctly validate document or assertion signatures, leading to security gaps. Authenticity is compromised when the reference elements validating the signed data are overlooked. Malicious actors can exploit this character flaw to insert crafted responses that subvert authentication. In turn, privilege escalation and unauthorized impersonation attacks become feasible, threatening data integrity and access control measures.
The technical execution of this vulnerability centers around the SAML signature's placement within XML documents. The validation process improperly assumes authenticity based on location rather than reference elements. Attack vectors involve removing or repositioning XML signature elements to exploit this flaw in validation logic. The vulnerability is catered to both Header and Assertion elements, allowing SAML responses to be manipulated post-validation. This scope includes the potential modification of claim attributes such as NameID and AttributeValue to match unrecognized users. Crafting responses with altered attributes paves the way for unauthorized access roles.
If successfully exploited, this vulnerability may lead to unauthorized access and privilege escalation within affected systems. Attackers could pose as legitimate users, gaining access to sensitive information or critical functionalities undeservedly. In multi-tenant environments, the ramifications include cross-domain access, potentially leading to extensive information exposure. Data leaks or unauthorized data manipulation are plausible outcomes, as altered permissions could facilitate access to administrative functions. The impacts of exploitation extend to reputational damage, legal repercussions, and financial losses for enterprises relying on vulnerable systems.
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