CVE-2023-2968
📋 TL;DR
This vulnerability allows a remote attacker to cause a denial of service by sending a crafted HTTP request that triggers a TypeError exception when accessing an undefined socket.remoteAddress variable. It affects systems running vulnerable proxy software that improperly handles this variable. The impact is service disruption without requiring authentication.
💻 Affected Systems
- JFrog Xray (proxy component)
📦 What is this software?
Proxy by Proxy Project
Proxy by Proxy Project
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage for affected proxy services, potentially cascading to dependent applications.
Likely Case
Temporary service disruption until the process restarts, with potential for repeated attacks.
If Mitigated
Minimal impact with proper network segmentation and request filtering in place.
🎯 Exploit Status
Exploitation requires sending crafted HTTP requests but no authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check JFrog security advisory for specific patched versions
Vendor Advisory: https://research.jfrog.com/vulnerabilities/undefined-variable-usage-in-proxy-leads-to-remote-denial-of-service-xray-520917
Restart Required: Yes
Instructions:
1. Check JFrog advisory for patched version. 2. Update JFrog Xray to the patched version. 3. Restart the Xray service.
🔧 Temporary Workarounds
Network Filtering
allBlock or filter suspicious HTTP requests at network perimeter or WAF.
Access Restriction
allRestrict network access to JFrog Xray proxy to trusted sources only.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate JFrog Xray from untrusted networks.
- Deploy a web application firewall (WAF) with rules to detect and block crafted HTTP requests.
🔍 How to Verify
Check if Vulnerable:
Check JFrog Xray version against advisory; monitor for TypeError exceptions in logs related to socket.remoteAddress.Check Version:
Check JFrog Xray documentation for version command (typically via web interface or configuration files).Verify Fix Applied:
Verify JFrog Xray is updated to patched version and no TypeError exceptions occur during testing with normal traffic.📡 Detection & Monitoring
Log Indicators:
- TypeError exceptions mentioning socket.remoteAddress
- Unusual HTTP request patterns
Network Indicators:
- Crafted HTTP requests to proxy endpoints
- Increased error responses
SIEM Query:
source="jfrog-xray" AND ("TypeError" OR "socket.remoteAddress")