CVE-2024-10121: Riskengine Radar Auth Bypass Vulnerability

CVE-2024-10121 Overview

A critical authorization bypass vulnerability has been identified in wfh45678 Radar versions up to 1.0.8. This vulnerability affects the Interface Handler component and allows remote attackers to bypass authorization controls through manipulation of input containing the /../ pattern. While this appears not to be a traditional path traversal weakness, the manipulation technique enables unauthorized access to protected resources and functionality.

Critical Impact

Remote attackers can bypass authorization controls without authentication, potentially gaining unauthorized access to sensitive data and functionality within the Radar application.

Affected Products

• Riskengine Radar versions up to and including 1.0.8
• All deployments utilizing the vulnerable Interface Handler component

Discovery Timeline

• 2024-10-18 - CVE-2024-10121 published to NVD
• 2024-10-30 - Last updated in NVD database

Technical Details for CVE-2024-10121

Vulnerability Analysis

This authorization bypass vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) exists in the Interface Handler component of wfh45678 Radar. The vulnerability allows attackers to manipulate authorization checks by injecting /../ sequences into requests. Unlike traditional path traversal attacks, this technique specifically targets the authorization logic rather than file system access, enabling unauthorized users to access protected interfaces and endpoints.

The exploit has been publicly disclosed, increasing the risk of active exploitation. The vendor was contacted about this vulnerability but did not respond, leaving users without an official patch or mitigation guidance.

Root Cause

The root cause stems from improper authorization validation in the Interface Handler component. The application fails to properly sanitize or validate user-controlled input before using it in authorization decisions. When the /../ pattern is included in requests, the authorization logic can be manipulated to grant access to resources that should otherwise be restricted. This represents a user-controlled key authorization bypass where the application uses attacker-controllable data to make authorization decisions without adequate validation.

Attack Vector

The attack can be initiated remotely over the network without requiring authentication or user interaction. An attacker crafts malicious requests containing the /../ manipulation pattern targeting the Interface Handler component. The vulnerable authorization logic fails to properly validate these requests, allowing the attacker to bypass access controls and interact with protected functionality.

The manipulation technique exploits how the application processes path-like input in authorization contexts. By including directory traversal-like sequences, attackers can confuse the authorization logic into granting inappropriate access levels. For detailed exploitation information, see the GitHub Authentication Bypass Vulnerability writeup.

Detection Methods for CVE-2024-10121

Indicators of Compromise

• HTTP requests to the Radar application containing /../ sequences in unexpected parameters or paths
• Unusual access patterns to protected interfaces from unauthenticated sessions
• Access log entries showing successful requests to administrative or restricted endpoints without proper authentication
• Anomalous authorization bypass events in application security logs

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block requests containing directory traversal patterns (/../) in authorization-relevant parameters
• Monitor access logs for requests to protected endpoints that lack corresponding authentication events
• Deploy intrusion detection signatures to identify exploitation attempts targeting the Interface Handler component
• Enable verbose logging on authorization decisions to capture bypass attempts

Monitoring Recommendations

• Configure alerting for unusual patterns of access to administrative interfaces
• Monitor for increases in failed authorization attempts followed by successful access
• Implement anomaly detection for request patterns that deviate from normal user behavior
• Review application logs regularly for evidence of authorization bypass attempts

How to Mitigate CVE-2024-10121

Immediate Actions Required

• Restrict network access to the Radar application to trusted IP ranges only
• Implement a reverse proxy or WAF to filter requests containing /../ patterns
• Disable or restrict access to the vulnerable Interface Handler component if not required
• Monitor for signs of exploitation while awaiting a vendor response

Patch Information

No official patch is currently available from the vendor. The vendor was contacted early about this disclosure but did not respond. Organizations should implement compensating controls until a patch becomes available. Monitor the VulDB entry for updates on potential fixes.

Workarounds

• Deploy a web application firewall configured to block requests containing /../ sequences targeting the Radar application
• Implement strict network segmentation to limit access to the Radar application from untrusted networks
• Consider temporarily taking the application offline if it processes sensitive data and cannot be adequately protected
• Implement additional authentication layers (such as VPN or IP whitelisting) in front of the application

# Example WAF rule to block exploitation attempts (ModSecurity format)
SecRule REQUEST_URI|ARGS|ARGS_NAMES "@contains /../" \
    "id:1001,\
    phase:1,\
    deny,\
    status:403,\
    log,\
    msg:'CVE-2024-10121 Authorization Bypass Attempt Blocked',\
    tag:'CVE-2024-10121'"