CVE-2022-48367
📋 TL;DR
This vulnerability in eZ Publish Ibexa Kernel allows attackers to bypass object state-based access controls, potentially accessing restricted content. It affects all eZ Publish/Ibexa installations using object state limitations for access control. The CVSS 9.8 score indicates critical severity with network-accessible exploitation.
💻 Affected Systems
- eZ Publish Ibexa Kernel
📦 What is this software?
Fastly by Ibexa
Fastly by Ibexa
Kernel by Ibexa
Kernel by Ibexa
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access sensitive content, modify restricted objects, or perform unauthorized administrative actions depending on object state configurations.
Likely Case
Unauthorized access to content that should be restricted based on object state limitations, potentially exposing confidential information.
If Mitigated
With proper network segmentation and authentication controls, impact limited to authorized users gaining unintended access to some content.
🎯 Exploit Status
Exploitation requires understanding of object state configurations but is technically simple once identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.5.28 or later
Vendor Advisory: https://developers.ibexa.co/security-advisories/ibexa-sa-2022-004-ineffective-object-state-limitation-and-unauthenticated-fastly-purge
Restart Required: Yes
Instructions:
1. Update to eZ Publish Ibexa Kernel version 7.5.28 or later. 2. Apply patches from vendor advisory. 3. Restart application services. 4. Verify object state limitations work correctly.
🔧 Temporary Workarounds
Disable Object State Limitations
allTemporarily disable access control based on object state until patching
Modify configuration to remove object state limitations from access control rules
Network Isolation
allRestrict network access to vulnerable systems
Configure firewall rules to limit access to trusted IPs only
🧯 If You Can't Patch
- Implement additional authentication/authorization layers before object state checks
- Monitor access logs for unusual patterns of object state-related requests
🔍 How to Verify
Check if Vulnerable:
Check if running eZ Publish Ibexa Kernel version earlier than 7.5.28 and using object state limitationsCheck Version:
Check application version in admin panel or via vendor-specific version commandVerify Fix Applied:
Verify version is 7.5.28 or later and test object state access controls work correctly📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to objects with state limitations
- Failed access attempts followed by successful access
Network Indicators:
- HTTP requests bypassing expected access control flows
SIEM Query:
Search for access to restricted objects without proper authorization events🔗 References
- https://developers.ibexa.co/security-advisories/ibexa-sa-2022-004-ineffective-object-state-limitation-and-unauthenticated-fastly-purge
- https://github.com/ezsystems/ezpublish-kernel/security/advisories/GHSA-5x4f-7xgq-r42x
- https://developers.ibexa.co/security-advisories/ibexa-sa-2022-004-ineffective-object-state-limitation-and-unauthenticated-fastly-purge
- https://github.com/ezsystems/ezpublish-kernel/security/advisories/GHSA-5x4f-7xgq-r42x
