CVE-2023-43052
📋 TL;DR
IBM Control Center versions 6.2.1 through 6.3.1 are vulnerable to server-side request forgery (SSRF) via improper input validation. Attackers can make the application perform unauthorized DNS lookups or HTTP requests to arbitrary external systems, potentially enabling reconnaissance or indirect attacks. Organizations running these IBM Control Center versions are affected.
💻 Affected Systems
- IBM Control Center
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attacker uses the vulnerable application as a proxy to attack internal systems, perform port scanning, access metadata services, or interact with restricted backend systems, potentially leading to data exfiltration or lateral movement.
Likely Case
Attacker performs reconnaissance by forcing the application to make requests to internal systems, revealing network topology, service availability, or potentially accessing cloud metadata endpoints.
If Mitigated
With proper network segmentation and egress filtering, impact is limited to information disclosure about what systems the application can reach, with no direct access to sensitive data.
🎯 Exploit Status
Exploitation requires sending crafted input to vulnerable endpoints, but specific details are not publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply interim fix or upgrade to version 6.3.2 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/7185102
Restart Required: Yes
Instructions:
1. Download the interim fix from IBM Fix Central for your version. 2. Stop IBM Control Center. 3. Apply the fix according to IBM documentation. 4. Restart IBM Control Center. 5. Verify the fix is applied.
🔧 Temporary Workarounds
Network Egress Filtering
allRestrict outbound network connections from the IBM Control Center server to only necessary destinations.
Configure firewall rules to block all outbound traffic except to required services
Input Validation Enhancement
allImplement additional input validation at the web application firewall or reverse proxy layer.
Configure WAF rules to block requests containing external URLs or IP addresses in vulnerable parameters
🧯 If You Can't Patch
- Implement strict network segmentation to isolate IBM Control Center from sensitive internal systems.
- Deploy a web application firewall with SSRF protection rules in front of the application.
🔍 How to Verify
Check if Vulnerable:
Check IBM Control Center version via administrative interface or configuration files. If version is between 6.2.1 and 6.3.1 inclusive, system is vulnerable.Check Version:
Check the version in the IBM Control Center administrative console or review installation logs.Verify Fix Applied:
After applying fix, verify version shows 6.3.2 or later, or check that interim fix is listed in installed fixes.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP/DNS requests from IBM Control Center server to unexpected domains or IPs
- Requests containing URL parameters with external addresses
Network Indicators:
- IBM Control Center server making HTTP requests to unusual external destinations
- DNS queries for suspicious domains from the application server
SIEM Query:
source="ibm-control-center" AND (url="*http://*" OR url="*https://*") AND NOT destination_ip IN [allowed_ips]