CVE-2024-10295
📋 TL;DR
CVE-2024-10295 is an authentication bypass vulnerability in APICast (Red Hat 3scale API Gateway) where malformed Basic Authentication headers with special characters can bypass authentication checks. This allows unauthorized access to backend APIs protected by the gateway. Organizations using affected versions of Red Hat 3scale API Gateway are impacted.
💻 Affected Systems
- Red Hat 3scale API Gateway (APICast)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of backend APIs, allowing attackers to access sensitive data, modify resources, or perform unauthorized operations as if they were legitimate authenticated users.
Likely Case
Unauthorized access to protected API endpoints, potentially leading to data exposure, privilege escalation, or service disruption depending on the API's functionality.
If Mitigated
Limited impact with proper network segmentation, API rate limiting, and additional authentication layers preventing successful exploitation.
🎯 Exploit Status
Exploitation requires sending specially crafted HTTP requests with malformed Basic Authentication headers containing special characters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: APICast 3.14.0 and later
Vendor Advisory: https://access.redhat.com/security/cve/CVE-2024-10295
Restart Required: Yes
Instructions:
1. Update to APICast 3.14.0 or later. 2. Restart APICast services. 3. Verify the update was successful.
🔧 Temporary Workarounds
Disable Basic Authentication
allSwitch to alternative authentication methods like OAuth, API keys, or JWT tokens instead of Basic Authentication.
Modify APICast configuration to remove Basic Authentication policies
Input Validation Filter
allImplement custom policy to validate and sanitize authentication headers before processing.
Create custom APICast policy to validate Authorization headers
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to block requests with malformed Basic Authentication headers containing special characters.
- Add additional authentication layer (API gateway, reverse proxy) in front of APICast to validate requests before they reach the vulnerable component.
🔍 How to Verify
Check if Vulnerable:
Check APICast version. If using Basic Authentication and version is below 3.14.0, the system is vulnerable.Check Version:
apicast --versionVerify Fix Applied:
After updating to 3.14.0+, test with malformed Basic Authentication headers to confirm authentication is properly enforced.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts with malformed Authorization headers
- Successful API access without proper authentication logs
Network Indicators:
- HTTP requests with Authorization headers containing special characters in Basic auth
- Unusual API access patterns from unauthenticated sources
SIEM Query:
search 'Authorization: Basic *[^a-zA-Z0-9+/=]*' in HTTP logs