CVE-2025-4210 Scanner

Casdoor is a web-based authentication system used widely by developers to manage user identities and authentication needs. It offers various features, including multi-factor authentication, SSO, and customizable UIs. Casdoor is deployed across many environments, from cloud services to self-hosted applications, allowing flexibility in identity management. Its integration capabilities make it a popular choice among organizations seeking to streamline their authentication processes. Developers utilize Casdoor to ensure secure access to applications, providing a centralized platform for user management. It is particularly valued for its extensibility and support for multiple languages.

The Authorization Bypass vulnerability in Casdoor allows attackers to manipulate requests to bypass authorization checks. This issue arises from improper handling of the `HandleScim` function within the application code. Without the necessary controls, unauthorized users may gain access to sensitive resources or functionalities. The vulnerability exists due to insufficient validation of authorization logic, leading to a potential security breach. This flaw can undermine data security, placing sensitive information at risk. Fixing it involves ensuring robust authorization checks are in place in all relevant functions.

Technical details reveal that the vulnerability is related to the `HandleScim` function located in `controllers/scim.go`. Attackers may exploit this endpoint to send crafted requests that bypass authorization filters. The exploitation does not require any prior authentication or user interaction. When successful, it permits unauthorized access to the application's user management endpoint `/scim/v2/Users` or `/api/scim/v2/Users`. It's crucial for developers to review access controls on these endpoints to seal this potential attack vector.

Exploitation of the Authorization Bypass vulnerability can lead to unauthorized access to user accounts and sensitive data. This can result in data exposure, unauthorized data manipulation, or privilege escalation within the application. Malicious actors could leverage this access to perform further attacks, such as injecting malicious code or exfiltrating additional data. The risk includes potential data breaches and compliance violations, which can have significant repercussions for affected organizations. Resolving this vulnerability is imperative to maintain the application's security posture.

REFERENCES

• https://github.com/casdoor/casdoor/commit/3d12ac8dc2282369296c3386815c00a06c6a92fe
• https://nvd.nist.gov/vuln/detail/CVE-2025-4210