CVE-2021-35562
📋 TL;DR
This vulnerability in Oracle Universal Work Queue allows authenticated attackers with low privileges to perform unauthorized data manipulation and access critical information via HTTP requests. It affects Oracle E-Business Suite versions 12.1.1-12.1.3 and 12.2.3-12.2.10. The vulnerability enables attackers to create, delete, or modify critical data and access sensitive information.
💻 Affected Systems
- Oracle E-Business Suite
- Oracle Universal Work Queue
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of Oracle Universal Work Queue data including unauthorized access to all critical business data, data destruction, and potential business disruption.
Likely Case
Unauthorized data manipulation and access to sensitive business information by authenticated users with malicious intent.
If Mitigated
Limited impact with proper access controls, network segmentation, and monitoring in place.
🎯 Exploit Status
Oracle describes this as 'easily exploitable' requiring only low privileged access via HTTP. No public exploit code has been disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply Oracle Critical Patch Update October 2021 or later
Vendor Advisory: https://www.oracle.com/security-alerts/cpuoct2021.html
Restart Required: Yes
Instructions:
1. Download the appropriate Critical Patch Update from Oracle Support. 2. Apply the patch following Oracle's patching procedures. 3. Restart affected Oracle E-Business Suite services. 4. Test functionality after patching.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to Oracle E-Business Suite to only trusted IP addresses and networks
Use firewall rules to limit access to Oracle E-Business Suite HTTP ports
Privilege Reduction
allReview and minimize user privileges to the minimum required for business functions
Review Oracle user roles and permissions using Oracle security administration tools
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to Oracle E-Business Suite
- Enhance monitoring and logging of Oracle Universal Work Queue activities and review for suspicious patterns
🔍 How to Verify
Check if Vulnerable:
Check Oracle E-Business Suite version and compare against affected versions 12.1.1-12.1.3 and 12.2.3-12.2.10Check Version:
Check Oracle E-Business Suite version through Oracle applications or database queries specific to your deploymentVerify Fix Applied:
Verify that October 2021 Critical Patch Update or later has been applied and check version information📡 Detection & Monitoring
Log Indicators:
- Unusual data manipulation activities in Oracle Universal Work Queue logs
- Multiple failed or unusual access attempts to Work Provider Site Level Administration functions
Network Indicators:
- Unusual HTTP requests to Oracle Universal Work Queue endpoints from low-privileged user accounts
SIEM Query:
Search for HTTP requests to Oracle E-Business Suite with parameters targeting Work Provider Site Level Administration functions from non-admin accounts