A vulnerability was found in 3Scale, when used with Keycloak 15 (or RHSSO 7.5.0) and superiors. When the auth_type is use_3scale_oidc_issuer_endpoint, the Token Introspection policy discovers the Token Introspection endpoint from the token_introspection_endpoint field, but the field was removed on RH-SSO 7.5. As a result, the policy doesn't inspect tokens, it determines that all tokens are valid.
The vulnerability has a CVSS score of 6.3, classifying it as medium severity. This is significant as it indicates a moderate risk to organizations utilizing the affected versions of 3scale and Keycloak. Without proper token validation, unauthorized users may gain access to protected resources.
Organizations should prioritize patching immediately. It is essential to ensure that the token validation process is functioning correctly to prevent potential misuse. Currently, there is no public exploit confirmed for this vulnerability, but the potential risk remains.
Given the nature of the vulnerability, organizations using RedHat 3scale should assess their implementations and prepare for updates or mitigation strategies as needed.
Vulnerability Details
The vulnerability allows an attacker to bypass token validation when using Keycloak 15 or RHSSO 7.5.0. The removal of the token_introspection_endpoint field leads to a scenario where all tokens are deemed valid, creating a significant security gap.
The CVSS 3.1 vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L, indicating that it has a low attack complexity and requires low privileges for exploitation.
The affected product is RedHat 3scale, with the potential impact on confidentiality, integrity, and availability being low. The vulnerability was published on February 28, 2024, and has been categorized under CWE-280.
Technical Analysis
The root cause of this vulnerability lies in the misconfiguration of the Token Introspection policy. The removal of the token_introspection_endpoint field from RH-SSO 7.5 results in a failure to validate tokens properly.
The attack vector for this vulnerability is network-based, meaning that an attacker can exploit this vulnerability remotely without needing physical access to the system. The attack complexity is classified as low, indicating that exploitation could be performed easily by an attacker with minimal technical skills.
Privileges required are low, and no user interaction is needed, making it easier for attackers to exploit. The confidentiality impact is low, and the same applies to integrity and availability, highlighting the need for immediate remediation.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to protected resources due to the inability of the Token Introspection policy to validate tokens effectively. This can lead to data exposure and potential system compromise.
The urgency assessment indicates that organizations should address this vulnerability in their priority patch cycle. Given the low exploitability score and the absence of known exploits at this time, organizations still face potential risks if this vulnerability is not mitigated.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch for RedHat 3scale are affected. Organizations should ensure that they are utilizing the patched version to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
Organizations should update to the latest version of RedHat 3scale and Keycloak to ensure that the Token Introspection policy functions as intended. If immediate patching is not feasible, consider implementing network controls to limit access to the affected systems.
Further, organizations may benefit from conducting a thorough security assessment to identify any existing vulnerabilities and strengthen their security posture. This can be achieved through application security assessment or penetration testing.
Detection Guidance
Monitor logs for any unusual activity related to token validation processes. Look for anomalies in token issuance and validation that may indicate attempts to exploit this vulnerability.
Additionally, organizations should be vigilant for behavioral changes that could suggest unauthorized access or misuse of the system.
AppSecure Threat Intelligence Insight
The long-term significance of this vulnerability highlights the importance of maintaining up-to-date configurations and monitoring security policies. It exemplifies the potential risks inherent in system updates that remove crucial validation processes.
Security teams should take lessons from this incident to reinforce their processes around system updates and security assessments. Regular reviews of configuration changes and security policies can mitigate similar risks in the future.
For comprehensive security strategies, organizations can leverage services such as penetration testing and red teaming to simulate potential attack scenarios and identify weaknesses.
Ultimately, the goal should be to foster a proactive security culture that prioritizes ongoing assessment and adaptation to emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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