CVE-2025-30694
📋 TL;DR
This vulnerability in Oracle Database's XML Database component allows authenticated attackers with network access via HTTP to perform unauthorized data manipulation and limited data reading. It affects Oracle Database Server versions 19.3-19.26, 21.3-21.17, and 23.4-23.7. Successful exploitation requires human interaction from someone other than the attacker and can impact additional products beyond the XML Database.
💻 Affected Systems
- Oracle Database Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could modify or delete critical XML data, potentially affecting dependent applications and systems, with unauthorized access to sensitive information stored in XML format.
Likely Case
Privileged users could abuse their access to manipulate XML data they shouldn't have permission to modify, leading to data integrity issues and limited information disclosure.
If Mitigated
With proper access controls and network segmentation, impact is limited to authorized users performing actions within their intended scope.
🎯 Exploit Status
Requires authenticated user with network access and human interaction from another person. CVSS indicates 'easily exploitable' with low attack complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply patches from Oracle Critical Patch Update Advisory - April 2025
Vendor Advisory: https://www.oracle.com/security-alerts/cpuapr2025.html
Restart Required: Yes
Instructions:
1. Download appropriate patch from My Oracle Support. 2. Apply patch following Oracle's patching procedures. 3. Restart database instances. 4. Verify patch application.
🔧 Temporary Workarounds
Restrict XML Database HTTP Access
allLimit network access to XML Database HTTP endpoints to trusted sources only
Configure firewall rules to restrict access to XML Database HTTP ports
Use Oracle Net ACLs to control access
Reduce User Privileges
allReview and minimize privileges for users with XML Database access
REVOKE unnecessary privileges from low-privileged users
Implement least privilege principle for XML Database users
🧯 If You Can't Patch
- Implement strict network segmentation to isolate XML Database components
- Enforce strong authentication and authorization controls for XML Database access
🔍 How to Verify
Check if Vulnerable:
Check Oracle Database version and patch level using SQL: SELECT * FROM v$version; and review patch historyCheck Version:
sqlplus / as sysdba -c "SELECT banner FROM v$version;"Verify Fix Applied:
Verify patch application using opatch lsinventory and check for April 2025 CPU patches📡 Detection & Monitoring
Log Indicators:
- Unusual XML Database access patterns
- Failed authorization attempts on XML Database
- Unexpected XML data modifications
Network Indicators:
- HTTP requests to XML Database endpoints from unauthorized sources
- Unusual XML-related network traffic
SIEM Query:
source="oracle_audit" AND (event_type="XML_DB_ACCESS" OR component="XML Database") AND (status="FAILED" OR user_privilege="LOW")