### Vulnerability Key Information Summary #### 1. Vulnerability Overview - **CVE ID**: CVE-2026-25747 - **Component**: camel-leveldb - **Affected Class**: DefaultLevelDBSerializer.java - **Vulnerable Methods**: deserializeKey(), deserializeExchange() #### 2. Vulnerability Impact - **CWE**: CWE-502: Deserialization of Untrusted Data - **Impact**: Remote Code Execution (RCE) - **Affected Versions**: All versions including 4.17.0 (unpatched at time of testing) #### 3. Technical Details The `DefaultLevelDBSerializer.java` class uses raw `ObjectInputStream` for deserialization without any filtering. #### 4. Reproduction Steps Includes: 1. **Build and start the application** 2. **Initialize LevelDB database** 3. **Generate malicious payload** 4. **Inject malicious payload into LevelDB** 5. **Trigger deserialization (RCE)** 6. **Verify successful exploitation** #### 5. Attack Vectors - Application restart - Recovery mechanisms - Direct access #### 6. Exploitation Conditions - Write access to LevelDB required - Presence of exploitable gadget chains in classpath (e.g., commons-collections:3.2.1, etc.) #### 7. Remediation Recommendation Adopt the same remediation technique as Cassandra, replacing raw `ObjectInputStream` with `ClassLoadingAwareObjectInputStream` and applying a configurable `ObjectInputFilter`. #### 8. Mitigation Measures - Restrict file access permissions, remove vulnerable libraries, use alternative serialization mechanisms, network segmentation, etc.