CVE-2024-55471 identifies an Insecure Direct Object Reference (IDOR) vulnerability within the Oqtane Framework, specifically in the Oqtane.Controllers.UserController component. IDOR vulnerabilities occur when an application exposes internal implementation objects such as database keys or file names without proper authorization checks, allowing attackers to manipulate these references to access unauthorized data. In this case, the vulnerability arises from insufficient validation of the 'id' parameter, which is used to retrieve user information. An attacker with limited privileges (PR:L) can modify this parameter to access sensitive information belonging to other users. The vulnerability does not require user interaction (UI:N) and can be exploited remotely over the network (AV:N) with low attack complexity (AC:L). The scope remains unchanged (S:U), meaning the impact is confined to the same security scope. The CVSS v3.1 vector reflects a high impact on confidentiality (C:H), but no impact on integrity (I:N) or availability (A:N). No patches or fixes are currently linked, and no known exploits have been reported in the wild as of the publication date. The underlying weakness corresponds to CWE-639, which relates to authorization bypass through improper access control. This vulnerability could expose sensitive user data such as personal details, potentially leading to privacy violations or further targeted attacks if leveraged by malicious actors.

The primary impact of CVE-2024-55471 is the unauthorized disclosure of sensitive user information, which compromises confidentiality. Organizations using the Oqtane Framework risk exposing personal or sensitive data of their users if this vulnerability is exploited. This can lead to privacy breaches, regulatory non-compliance (e.g., GDPR, HIPAA), reputational damage, and potential legal consequences. Since the vulnerability does not affect data integrity or system availability, the risk is limited to information disclosure. However, attackers could use the exposed information for social engineering, identity theft, or to facilitate further attacks within the environment. The requirement for some privilege level reduces the attack surface but does not eliminate risk, especially in environments with many users or where privilege escalation is possible. The absence of known exploits in the wild suggests limited current exploitation but also indicates the need for proactive mitigation before attackers develop weaponized exploits.

To mitigate CVE-2024-55471, organizations should implement strict authorization checks on all user-related endpoints, ensuring that users can only access their own data. Specifically, the UserController should validate that the requesting user’s identity matches the 'id' parameter or that the user has explicit permission to access the requested resource. Employ role-based access control (RBAC) or attribute-based access control (ABAC) mechanisms to enforce fine-grained permissions. Conduct thorough code reviews and security testing focused on IDOR vulnerabilities, including fuzzing and parameter tampering tests. Monitor logs for unusual access patterns or repeated attempts to access unauthorized user IDs. If possible, update to a patched version of the Oqtane Framework once available. In the interim, consider implementing web application firewall (WAF) rules to detect and block suspicious parameter manipulation. Educate developers on secure coding practices related to access control and parameter validation to prevent similar issues in future development.