Rule Category

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

Alert Message

SERVER-WEBAPP Jenkins CLI arbitrary Java object deserialization attempt

Rule Explanation

Jenkins has a deserialization vulnerability in the "/cli" endpoint. Sending a maliciously crafted payload to the server can result in remote code execution.

What To Look For

A Java object deserialization vulnerability exists in the Jenkins CLI interface. This event is triggered when a serialized Java object is sent to the interface.

Known Usage

No public information

False Positives

Known false positives, with the described conditions

Non-malicious serialized java objects

Contributors

Cisco Talos Intelligence Group

Rule Groups

MITRE::ATT&CK Framework::Enterprise::Initial Access::Exploit Public-Facing Application

MITRE::ATT&CK Framework::Enterprise::Privilege Escalation::Exploitation for Privilege Escalation

CVE

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

This product uses data from the NVD API but is not endorsed or certified by the NVD.
CVE-2016-9299
Loading description
CVE-2017-1000353
Loading description