Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP Java Library UniversalExtractor unauthorized deserialization attempt

Rule Explanation

The rule is looking for exploitation using `com.tangosol.util.extractor.UniversalExtractor` in Oracle Weblogic using T3 protocol

What To Look For

This rule alerts on exploitation traffic pattern that is seen in unauthenticated deserialization in T3 protocol of Oracle Weblogin is observed

Known Usage

No public information

False Positives

No known false positives


Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic: Initial Access

Technique: External Remote Services

For reference, see the MITRE ATT&CK vulnerability types here:

Additional Links

Rule Vulnerability

Insecure Deserialization

Insecure Deserialization relates to web application security. Applications turn an object into data through serialization; the reverse of that process, deserialization, can be vulnerable to attacks when the application trusts the data that is being deserialized. Serialized data is machine readable and not encrypted; serialized user-supplied data should not be trusted. Deserialization attacks can lead to remote code execution.

CVE Additional Information