CVE-2024-29205
📋 TL;DR
This vulnerability allows remote unauthenticated attackers to send specially crafted requests to Ivanti Connect Secure and Ivanti Policy Secure gateways, causing service disruptions through improper input validation. It affects all internet-facing deployments of these products, potentially leading to denial of service.
💻 Affected Systems
- Ivanti Connect Secure
- Ivanti Policy Secure
⚠️ 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 service outage of the affected Ivanti gateway, disrupting VPN/secure access for all users and potentially enabling further exploitation.
Likely Case
Service disruption or denial of service affecting the web component, impacting user connectivity and administrative access.
If Mitigated
Limited impact with proper network segmentation and monitoring, though service disruption remains possible.
🎯 Exploit Status
Remote unauthenticated exploitation is confirmed in the CVE description. No public proof-of-concept has been identified at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Ivanti security advisory for specific patched versions
Restart Required: Yes
Instructions:
1. Review Ivanti security advisory for specific patch versions
2. Download appropriate patch from Ivanti support portal
3. Apply patch following Ivanti documentation
4. Restart affected services
5. Verify patch application and functionality
🔧 Temporary Workarounds
Network Access Restriction
allRestrict access to Ivanti web interfaces to trusted IP addresses only
Load Balancer/Proxy Protection
allImplement rate limiting and request filtering at network perimeter
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to Ivanti interfaces
- Deploy intrusion prevention systems (IPS) with rules to detect and block malicious requests targeting this vulnerability
🔍 How to Verify
Check if Vulnerable:
Check Ivanti appliance version via web admin interface or CLI. If running 9.x or 22.x versions, assume vulnerable unless patched.Check Version:
Via CLI: show version or via web interface: System > Maintenance > Version InformationVerify Fix Applied:
Verify version number after patch application matches Ivanti's patched version list. Test web interface functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual request patterns to web interface
- Service restart events
- Error logs indicating malformed requests
Network Indicators:
- Spike in requests to Ivanti web ports (typically 443)
- Requests with unusual patterns or payloads
SIEM Query:
source="ivanti*" AND (event_type="error" OR event_type="restart") AND request_size>threshold🔗 References
- https://forums.ivanti.com/s/article/SA-CVE-2024-21894-Heap-Overflow-CVE-2024-22052-Null-Pointer-Dereference-CVE-2024-22053-Heap-Overflow-and-CVE-2024-22023-XML-entity-expansion-or-XXE-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US
- https://forums.ivanti.com/s/article/SA-CVE-2024-21894-Heap-Overflow-CVE-2024-22052-Null-Pointer-Dereference-CVE-2024-22053-Heap-Overflow-and-CVE-2024-22023-XML-entity-expansion-or-XXE-for-Ivanti-Connect-Secure-and-Ivanti-Policy-Secure-Gateways?language=en_US
