CVE-2024-43177
📋 TL;DR
IBM Concert versions 1.0.0 and 1.0.1 are vulnerable to cross-site request forgery (CSRF) and related attacks because they use cookies without the SameSite attribute. This allows attackers to trick authenticated users into performing unintended actions. Only users of IBM Concert 1.0.0-1.0.1 are affected.
💻 Affected Systems
- IBM Concert
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could perform actions as authenticated users, potentially modifying data, changing configurations, or accessing sensitive information depending on user privileges.
Likely Case
Attackers could trick users into performing unintended actions like changing settings or submitting data through crafted requests.
If Mitigated
With proper SameSite cookie controls, the attack surface is significantly reduced, limiting CSRF opportunities.
🎯 Exploit Status
Exploitation requires user interaction (visiting malicious site while authenticated) but uses well-known CSRF techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: IBM Concert 1.0.2 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/7173596
Restart Required: Yes
Instructions:
1. Download IBM Concert 1.0.2 or later from IBM support. 2. Backup current installation. 3. Install the updated version following IBM's deployment guide. 4. Restart the application services.
🔧 Temporary Workarounds
Configure SameSite Cookie Attribute
allManually configure cookies to use SameSite=Strict or SameSite=Lax attributes
Configuration depends on web server/reverse proxy. For Apache: Header edit Set-Cookie ^(.*)$ "$1; SameSite=Strict"
For Nginx: add_header Set-Cookie "Path=/; Secure; HttpOnly; SameSite=Strict";
🧯 If You Can't Patch
- Implement CSRF tokens on all state-changing requests
- Use web application firewall rules to detect and block CSRF attempts
🔍 How to Verify
Check if Vulnerable:
Check if IBM Concert cookies lack SameSite attribute using browser developer tools or intercepting requestsCheck Version:
Check IBM Concert admin interface or consult deployment documentation for version informationVerify Fix Applied:
Verify cookies now include SameSite=Strict or SameSite=Lax attribute in HTTP responses📡 Detection & Monitoring
Log Indicators:
- Unusual request patterns from external domains
- Multiple failed state-changing requests from same IP
Network Indicators:
- Requests with missing or mismatched referrer headers for authenticated actions
SIEM Query:
source="web_server" AND (uri CONTAINS "/api/" OR uri CONTAINS "/action/") AND referrer NOT CONTAINS "your-domain.com" AND status=200