CVE-2024-41696

Executive Summary

CVE-2024-41696 is a medium-severity information disclosure vulnerability affecting the PRI WEB Portal Add-On for Priority ERP on-premises deployments. The flaw, classified under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), allows an unauthenticated remote attacker to access sensitive data through the web portal interface. With a CVSS score of 7.5, the vulnerability is rated High due to its network-based attack vector and low complexity, requiring no privileges or user interaction. The EPSS score of 0.0% indicates low current exploitation activity, but the lack of a confirmed patch makes this a significant risk for organizations using the affected software.

Supply Chain & Package Security

This vulnerability is not associated with NPM, PyPI, Go, or Ruby packages. It is a proprietary ERP add-on component, and no open-source package security implications are present.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – Exploitable remotely over the network.
• Attack Complexity (AC): Low (L) – No special conditions required.
• Privileges Required (PR): None (N) – No authentication needed.
• User Interaction (UI): None (N) – No user action required.
• Scope (S): Unchanged (U) – Exploit does not affect other components.
• Confidentiality (C): High (H) – Complete loss of confidentiality.
• Integrity (I): None (N) – No impact on data integrity.
• Availability (A): None (N) – No impact on availability.

Threat Level: High. The vulnerability allows unauthenticated access to sensitive information, potentially exposing business-critical data such as customer records, financial data, or internal configurations.

Deep Dive & Mechanics

The PRI WEB Portal Add-On for Priority ERP on-premises exposes sensitive information due to improper access controls or insecure handling of API responses. The exact mechanism is not publicly documented, but based on CWE-200, the flaw likely involves:

• Direct Object Reference (IDOR): The portal may expose internal identifiers or endpoints that allow an attacker to enumerate or access data without proper authorization.
• Insecure Direct Object Reference in API: The web portal’s REST or SOAP API may return sensitive fields (e.g., user credentials, session tokens, or database records) in responses that should be restricted.
• Misconfigured CORS or Headers: The server may leak sensitive data through error messages, debug endpoints, or verbose logging.

The vulnerability is exploitable without authentication, meaning any network-accessible attacker can send crafted requests to the PRI WEB Portal and retrieve confidential information.

Vulnerable vs. Patched Code

Since no official patch or version details are available, a direct code comparison is not possible. However, the following hypothetical example illustrates the vulnerability:

Vulnerable Code (Conceptual):

@app.route('/api/user/profile')
def get_user_profile():
    user_id = request.args.get('id')
    # No authentication check
    user_data = db.query("SELECT * FROM users WHERE id = ?", user_id)
    return jsonify(user_data)  # Exposes all fields including password hash

Patched Code (Conceptual):

@app.route('/api/user/profile')
@require_authentication
def get_user_profile():
    user_id = request.args.get('id')
    # Validate user has access to this profile
    if not current_user.can_access(user_id):
        abort(403)
    user_data = db.query("SELECT * FROM users WHERE id = ?", user_id)
    # Return only non-sensitive fields
    return jsonify({k: v for k, v in user_data.items() if k not in SENSITIVE_FIELDS})

Exploitation & Lab Setup

Red Team (Offensive)

Prerequisites:

• A lab environment with a vulnerable instance of PRI WEB Portal Add-On for Priority ERP on-premises.
• Network access to the web portal (e.g., http://target:8080/).

Exploitation Steps:

1. Reconnaissance: Identify exposed endpoints using directory brute-forcing or spidering.

   gobuster dir -u http://target:8080/ -w /usr/share/wordlists/dirb/common.txt
   

2. Endpoint Discovery: Look for API paths like /api/, /rest/, or /soap/.
3. Data Extraction: Send unauthenticated GET requests to suspected endpoints.

   curl -v http://target:8080/api/users
   curl -v http://target:8080/rest/orders
   

4. Parameter Manipulation: If IDOR is present, iterate through IDs.

   for i in {1..100}; do curl -s "http://target:8080/api/user?id=$i"; done
   

5. Data Exfiltration: Collect and analyze responses for sensitive data (e.g., usernames, passwords, financial records).

No public exploit code is available for this CVE.

Blue Team (Defensive)

Detection & Response:

1. Monitor for anomalous API requests: Look for repeated requests to /api/, /rest/, or /soap/ endpoints from unknown IPs.
2. Implement rate limiting: Block IPs that exceed a threshold of requests per minute.
3. Enable logging: Log all requests to sensitive endpoints and review for unauthorized access.
4. Deploy WAF rules: Block requests with suspicious patterns (e.g., id=1, id=2 enumeration).
5. Patch management: Since no patch is available, consider isolating the web portal behind a VPN or firewall.

Indicators of Compromise (IOCs)

• Network IOCs:
  • Unusual HTTP GET requests to /api/, /rest/, or /soap/ endpoints.
  • High volume of requests from a single IP to the web portal.
  • Responses containing sensitive data (e.g., password, ssn, credit_card) in plaintext.
• File IOCs:
  • Log entries showing 403 or 200 responses to unauthenticated API calls.
  • Temporary files created by exploitation tools (e.g., gobuster output).
• System IOCs:
  • Unexpected outbound connections from the web server to external IPs (data exfiltration).

Detection Engineering

YARA Rule

rule CVE_2024_41696_PRI_WEB_Portal_Info_Disclosure {
    meta:
        description = "Detects attempts to exploit CVE-2024-41696 via sensitive data exposure in PRI WEB Portal"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2024-41696"
    strings:
        $sensitive1 = /password["']?\s*[:=]\s*["'][^"']+["']/ nocase
        $sensitive2 = /ssn["']?\s*[:=]\s*["'][^"']+["']/ nocase
        $sensitive3 = /credit_card["']?\s*[:=]\s*["'][^"']+["']/ nocase
        $api_endpoint = /\/api\/(users|orders|invoices|config)/ nocase
    condition:
        any of ($sensitive*) and $api_endpoint
}

Sigma Rule

title: CVE-2024-41696 - PRI WEB Portal Information Disclosure
id: 7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d
status: experimental
description: Detects unauthenticated access to sensitive API endpoints in PRI WEB Portal
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
    service: access_combined
detection:
    selection:
        cs-method: 'GET'
        cs-uri-stem:
            - '/api/*'
            - '/rest/*'
            - '/soap/*'
        sc-status: 200
    condition: selection
falsepositives:
    - Legitimate API usage from authorized clients
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2024-41696 PRI WEB Portal Information Disclosure Attempt"; flow:to_server,established; content:"GET"; http_method; content:"/api/"; http_uri; nocase; content:"200"; http_server_body; pcre:"/(password|ssn|credit_card)/i"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Isolate the vulnerable system: Place the PRI WEB Portal behind a firewall or VPN to restrict network access.
2. Implement authentication: Enforce authentication for all API endpoints if not already done.
3. Apply input validation: Sanitize and validate all user-supplied parameters.
4. Disable debug/verbose modes: Ensure error messages do not leak sensitive information.

Long-Term Fixes:

• Vendor patch: Await an official patch from Priority. Contact their support for a timeline.
• Code review: If source code is available, audit all API endpoints for proper access controls.
• Web Application Firewall (WAF): Deploy a WAF with rules to block unauthenticated API requests.
• Network segmentation: Place the ERP system in a separate network segment with strict access controls.

Workarounds:

• Custom reverse proxy: Use a reverse proxy (e.g., Nginx) to add authentication and rate limiting.
• Disable unused endpoints: If possible, disable or restrict access to the web portal until a patch is available.

Valters IT
DevSecOps & Cyber Threat Intelligence Division