CVE-2024-53553

9.1 CRITICAL

📋 TL;DR

This vulnerability allows attackers to bypass authentication in OPEXUS FOIAXPRESS PUBLIC ACCESS LINK v11.1.0 by sending specially crafted web requests. Organizations using this specific version of the FOIAXPRESS software are affected. The high CVSS score indicates this is a critical security issue.

💻 Affected Systems

Products:
  • OPEXUS FOIAXPRESS PUBLIC ACCESS LINK
Versions: v11.1.0
Operating Systems: Windows Server (typical deployment)
Default Config Vulnerable: ⚠️ Yes
Notes: Specifically affects the PUBLIC ACCESS LINK component of FOIAXPRESS used for external request submission and tracking.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise allowing unauthorized access to sensitive FOIA request data, potential data exfiltration, and further privilege escalation within the system.

🟠

Likely Case

Unauthorized access to FOIA request portal, viewing of sensitive government/public records, and potential manipulation of request status or data.

🟢

If Mitigated

Limited impact with proper network segmentation, strong monitoring, and authentication controls in place.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ⚠️ Yes
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

The vulnerability appears to be an Execute After Redirect (EAR) issue similar to referenced examples, making exploitation straightforward.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Unknown

Vendor Advisory: Not available

Restart Required: No

Instructions:

Contact OPEXUS support for patch availability and upgrade instructions. Monitor vendor security advisories.

🔧 Temporary Workarounds

Network Access Restriction

all

Restrict access to FOIAXPRESS portal to trusted IP ranges only

Web Application Firewall Rules

all

Implement WAF rules to detect and block crafted authentication bypass requests

🧯 If You Can't Patch

  • Implement strict network segmentation to isolate FOIAXPRESS from other critical systems
  • Enable detailed logging and monitoring for authentication bypass attempts

🔍 How to Verify

Check if Vulnerable:

Check FOIAXPRESS version in application admin panel or via file version checks. Test with known exploit patterns if authorized.

Check Version:

Check application admin interface or examine application files for version information

Verify Fix Applied:

Verify version upgrade to patched release and test authentication bypass attempts fail.

📡 Detection & Monitoring

Log Indicators:

  • Unusual authentication patterns
  • Requests bypassing normal auth flow
  • Access from unexpected IPs after auth bypass

Network Indicators:

  • HTTP requests with crafted parameters targeting auth endpoints
  • Unusual redirect patterns

SIEM Query:

source="foiaxpress" AND (event_type="auth_failure" OR url_contains="redirect") AND status="200"

🔗 References

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