Horizon Alert
Summary of the vulnerability and why it matters
This advisory describes vulnerabilities in a web application's game management endpoint that could allow an authenticated attacker to modify user information, falsify game scores to claim prizes, gain administrative privileges, cause denial-of-service, and access sensitive internal data. The main concern is confirming relevance and exposure.
- Unauthorized data alteration and prize claims.
- Critical flaws risk admin access and data breaches.
- Confirm if our systems are affected by these risks.
Attack Path
How an attacker could exploit the issue
An attacker with authenticated access can leverage vulnerabilities in the `/addJugador` endpoint to compromise user data and game integrity. By manipulating specific parameters, an attacker can alter user information, falsify game scores to claim prizes, or assign themselves administrative privileges. Additionally, specially crafted numeric inputs can lead to a denial-of-service attack, rendering games unplayable. The `urlImatge` parameter also allows for the retrieval of sensitive internal information.
- Entry condition: Authenticated user.
- Trigger point: Manipulating game score parameters.
- Resulting risk: Unauthorized access and game disruption.
Live Threat
Current exploitation, exposure, and threat context
An authenticated attacker could modify user information, falsify game scores to obtain prizes, assign themselves administrator privileges, cause denial-of-service by crashing the system with excessively long inputs, or access sensitive internal data, including user IP addresses and local files, by exploiting vulnerabilities in the '/addJugador' endpoint.
- User data and game integrity are at risk.
- Unsanctioned modifications to parameters can occur.
- Unauthorized access, data exposure, and service disruption are possible.
Operational Fix
Recommended remediation, mitigation, and detection steps
This vulnerability affects an application endpoint that allows modification of user information, falsification of game scores, self-assignment of administrative privileges, denial-of-service, and retrieval of sensitive data. Application owners and platform teams are likely responsible for managing this service, with potential involvement from security or vendor management teams if it's a third-party product. The first practical step is to identify all instances of this application, determine their exposure and business criticality, and then plan remediation based on risk.
- Application owners should manage the issue.
- Verify application reachability and criticality.
- Plan remediation based on risk.
