[ERPSCAN-15-005] SAP Mobile Platform - XXE

From: Darya Maenkova <d.maenkova@erpscan.com>
To: pen-test@securityfocus.com,bugtraq@securityfocus.com,bugs@securitytracker.com,pen-test@securityfocus.com
Subject: [ERPSCAN-15-005] SAP Mobile Platform - XXE

ERPSCAN Research Advisory [ERPSCAN-15-005] SAP Mobile Platform - XXE

Application:            SAP Mobile Platform 2.3
Versions Affected:        SAP Mobile Platform 2.3, probably others
Vendor URL:            http://SAP.com
Bugs:                XML eXternal Entity
Sent:                06.11.14
Reported:            06.11.14
Vendor response:                07.11.14
Date of Public Advisory:        18.06.2015
Reference:            SAP Security Note 2125358
Author:                Dmitry Chastukhin (ERPScan)


Title: SAP Mobile Platform 2.3
Advisory ID: [ERPSCAN-15-005]
Risk: High
Advisory URL: 
Date published: 15.02.2015
Vendors contacted: SAP

Class: XML External Entity [CWE-611]
Impact: information disclosure, denial of service, read file
Remotely Exploitable: Yes
Locally Exploitable: No
CVE Name: CVE-2015-2813

1) An attacker can read an arbitrary file on the server by sending a 
correct XML request with a crafted DTD to/scc/messagebroker/http and 
reading the reply from the service.
2) An attacker can perform a DoS attack (for example, an XML Entity 
Expansion attack)
3) A SMB Relay attack is a type of Man-in-the-Middle attack where the 
attacker asks the victim to authenticate into a machine controlled by 
the attacker, then relays the credentials to the target. The attacker 
forwards the authentication information both ways, giving them access.

SAP Mobile Platform 2.2
SAP Mobile Platform 2.3
Other versions are probably affected too, but they were not checked.

To correct this vulnerability, install SAP Security Note 2125358 or:
* Upgrade your existing SMP 2.2 installation to SMP 2.2 SP06 PL02
* Upgrade your existing SMP 2.3 installatoin to SMP 2.3 SP05 PL01

Dmitry Chastuin (ERPScan)

SAP XML parser (/scc/messagebroker/http) validates all incoming XML 
requests with a user-specified DTD.

Sent:                06.11.14
Reported:            07.11.14
Vendor response:                07.11.14
Date of Public Advisory:        18.06.2015


10. ABOUT ERPScan Research
The company\u20ac\u2122s expertise is based on the research subdivision of ERPScan, 
which is engaged in vulnerability research and analysis of critical 
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We have highly qualified experts in staff with experience in many 
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