CVE-2024-4177
📋 TL;DR
A host whitelist parser vulnerability in the GravityZone Update Server proxy service allows attackers to perform server-side request forgery (SSRF). This affects only on-premise deployments of GravityZone Console versions before 6.38.1-2, potentially enabling unauthorized access to internal systems.
💻 Affected Systems
- Bitdefender GravityZone Console
📦 What is this software?
Gravityzone by Bitdefender
⚠️ Risk & Real-World Impact
Worst Case
Attacker gains access to internal network resources, exfiltrates sensitive data, or pivots to other systems through the compromised server.
Likely Case
Unauthorized requests to internal services, potential data leakage from internal endpoints accessible to the server.
If Mitigated
Limited impact if network segmentation restricts server access to only necessary internal resources.
🎯 Exploit Status
Exploitation requires understanding of the whitelist parser flaw and ability to send crafted requests to the proxy service.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.38.1-2
Vendor Advisory: https://bitdefender.com/consumer/support/support/security-advisories/host-whitelist-parser-issue-in-gravityzone-console-on-premise-va-11554/
Restart Required: Yes
Instructions:
1. Download GravityZone Console version 6.38.1-2 from Bitdefender. 2. Backup current configuration. 3. Install the update following vendor documentation. 4. Restart the GravityZone services.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to the GravityZone Update Server to only necessary internal IP ranges.
Firewall Rules
allImplement firewall rules to block outbound requests from the GravityZone server to unauthorized internal systems.
🧯 If You Can't Patch
- Isolate the GravityZone server in a restricted network segment with minimal internal access.
- Monitor all outbound traffic from the GravityZone server for unusual patterns or requests to unexpected internal IPs.
🔍 How to Verify
Check if Vulnerable:
Check the GravityZone Console version in the administration interface; if version is below 6.38.1-2 and deployed on-premise, it is vulnerable.Check Version:
Check via GravityZone Console web interface under Administration > About or similar section.Verify Fix Applied:
Confirm the version is 6.38.1-2 or higher in the administration interface after patching.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP/HTTPS requests from the GravityZone server to internal IPs not in the whitelist
- Failed authentication attempts or access errors in proxy service logs
Network Indicators:
- Unexpected traffic from GravityZone server to internal systems on non-standard ports
- SSRF patterns in HTTP requests from the server
SIEM Query:
source="gravityzone_logs" AND (http_request TO internal_ip NOT IN whitelist) OR (proxy_error)🔗 References
- https://bitdefender.com/consumer/support/support/security-advisories/host-whitelist-parser-issue-in-gravityzone-console-on-premise-va-11554/
- https://www.cve.org/CVERecord?id=CVE-2024-4177
- https://bitdefender.com/consumer/support/support/security-advisories/host-whitelist-parser-issue-in-gravityzone-console-on-premise-va-11554/
