CVE-2024-21872
📋 TL;DR
This vulnerability allows unauthenticated attackers to bypass authentication by manipulating cookies, gaining access to hidden administrative pages and performing critical operations on affected transmitters. It affects industrial control systems (ICS) and operational technology (OT) devices that use vulnerable authentication mechanisms. Organizations using these specific transmitter devices are at risk.
💻 Affected Systems
- Specific transmitter devices (exact models not specified in provided references)
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of transmitter devices allowing unauthorized control, configuration changes, or disruption of industrial processes, potentially leading to operational shutdowns or safety incidents.
Likely Case
Unauthorized access to transmitter configuration and monitoring interfaces, enabling data manipulation, settings changes, or disruption of normal operations.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external attackers from reaching vulnerable interfaces.
🎯 Exploit Status
Authentication bypass via cookie manipulation typically requires minimal technical skill. No public exploit code was mentioned in the provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-24-107-02
Restart Required: Yes
Instructions:
1. Contact device vendor for specific firmware updates
2. Apply vendor-provided patches or firmware updates
3. Restart affected devices after patching
4. Verify authentication mechanisms are functioning correctly
🔧 Temporary Workarounds
Network Segmentation
allIsolate transmitter devices from untrusted networks and restrict access to authorized management systems only.
Access Control Lists
allImplement strict firewall rules to limit access to transmitter web interfaces to specific IP addresses.
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable devices from untrusted networks
- Deploy intrusion detection systems to monitor for authentication bypass attempts
🔍 How to Verify
Check if Vulnerable:
Test authentication bypass by attempting to access administrative interfaces without proper credentials while manipulating session cookies.Check Version:
Check device firmware version via web interface or vendor-specific management toolsVerify Fix Applied:
Verify that cookie manipulation no longer allows access to restricted pages and proper authentication is enforced.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful access
- Access to administrative pages from unexpected IP addresses
- Cookie manipulation attempts in web server logs
Network Indicators:
- HTTP requests with modified cookie values to transmitter interfaces
- Unauthorized access patterns to administrative endpoints
SIEM Query:
source="transmitter_web_logs" AND (uri="/admin/*" OR uri="/config/*") AND (status=200 OR status=302) AND NOT (user_agent="legitimate_management_tool")