FILE-JAVA -- Snort has detected traffic targeting vulnerabilities that are exploited in java files such as .class or .jar.
FILE-JAVA IBM Java invokeWithClassLoaders method call attempt
This event is generated when a user attempts to download a .class file that contains a call to the invokeWithClassLoaders() method, which can be used to escape vulnerable IBM Java sandboxes. Impact: Attempted User Privilege Gain Details: Rule checks for a .class containing a call to invokeWithClassLoaders() from the com.ibm.rmi.util.ProxyUtil class. Ease of Attack: Hard
This event is generated when a user attempts to download a .class file that contains a call to the invokeWithClassLoaders() method, which can be used to escape vulnerable IBM Java sandboxes.
No public information
Known false positives, with the described conditions
Any .class file containing the method will be detected.
Cisco Talos Intelligence Group
No rule groups
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-2012-4820 |
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Tactic: Initial Access
Technique: Spearphishing Attachment
For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org