Oswe | Soapbx
PHP object injection is common, but SoapBX often leans into Java. You will find gadget chains using libraries like commons-collections. The challenge is not just running ysoserial; it is identifying where the user input enters a readObject() call buried three layers deep in a custom SOAP handler.
SOAP relies on XML. Security often relies on XML Signatures to ensure the message wasn't tampered with. In SoapBX, you will encounter a vulnerability called XML Signature Wrapping. The server checks the signature of the <Body> tag. However, due to poor XPath implementation, you can inject a second <Body> tag that the server processes after verifying the first (legitimate) tag. This allows you to spoof administrative users without ever breaking the cryptographic signature. This is a purely white-box logical flaw—impossible to find with black-box fuzzing. soapbx oswe
There is no "single-click exploit" on SoapBX. You cannot just send one malicious payload. The path to RCE typically requires: PHP object injection is common, but SoapBX often
If you fail at any step, you fail SoapBX. If you fail at any step, you fail SoapBX
<!DOCTYPE foo [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]>
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body>
<getUserInfo>
<username>&xxe;</username>
</getUserInfo>
</soap:Body>
</soap:Envelope>
<soap:Body>
<login>
<user>' or '1'='1</user>
<pass>irrelevant</pass>
</login>
</soap:Body>