Rule Category

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

Alert Message

SERVER-WEBAPP Apache OFBiz XMLRPC unsafe deserialization attempt

Rule Explanation

This rule looks for Java RMI classes in a serialized request to the Apache OFBiz SOAP service endpoint. These classes can be used to abuse the deserialization offered by the SOAP endpoint, and can lead to full compromise of the underlying operating system hosting the Apache OFBiz website.

What To Look For

This rule alerts on an attempt to exploit an unsafe deserialization vulnerability in Apache OFBiz.

Known Usage

Public information/Proof of Concept available

False Positives

No known false positives

Contributors

Cisco Talos Intelligence Group

MITRE ATT&CK Framework

Tactic: Initial Access

Technique: Exploit Public-Facing Application

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

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