CVE-2024-50651 identifies an Incorrect Access Control vulnerability in the java_shop 1.0 application. This vulnerability arises because the application fails to properly enforce authorization checks on the ID parameter used to retrieve user information. An attacker with limited privileges (PR:L) can manipulate this parameter to access sensitive data belonging to other users, violating confidentiality. The vulnerability does not require user interaction (UI:N) and can be exploited remotely over the network (AV:N). The scope is unchanged (S:U), meaning the impact is confined to the vulnerable component without affecting other system components. The vulnerability is classified under CWE-639, which involves authorization bypass due to improper access control mechanisms. Although no patches or exploits are currently available, the vulnerability presents a significant risk to user data privacy. The CVSS 3.1 base score of 6.5 reflects a medium severity, primarily due to the high confidentiality impact and ease of exploitation with low attack complexity. Organizations running java_shop 1.0 should audit their access control logic, especially around user ID parameters, to prevent unauthorized data disclosure.

The primary impact of CVE-2024-50651 is the unauthorized disclosure of sensitive user information, which can lead to privacy violations, identity theft, and potential regulatory non-compliance (e.g., GDPR, CCPA). Since the vulnerability allows attackers to access data of other users by simply modifying a parameter, it can be exploited to harvest large volumes of sensitive data if left unmitigated. This can damage organizational reputation, erode customer trust, and result in financial penalties. The vulnerability does not affect data integrity or system availability, so the risk is confined to confidentiality breaches. However, the ease of exploitation over the network without user interaction increases the likelihood of attacks. Organizations with large user bases or handling sensitive personal information are particularly at risk. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, as attackers may develop exploits once the vulnerability is publicly known.

To mitigate CVE-2024-50651, organizations should implement strict access control checks on all user-related parameters, especially the ID parameter used to fetch user data. This includes validating that the requesting user is authorized to access the requested resource before returning any sensitive information. Employ role-based access control (RBAC) or attribute-based access control (ABAC) mechanisms to enforce least privilege principles. Conduct thorough code reviews and penetration testing focused on access control logic. If patches become available, apply them promptly. In the absence of patches, deploy web application firewalls (WAFs) with custom rules to detect and block suspicious parameter tampering. Monitor logs for unusual access patterns involving user ID modifications. Educate developers on secure coding practices related to authorization and parameter validation. Additionally, consider implementing rate limiting and anomaly detection to reduce the risk of automated exploitation attempts.