SAP Business Objects Unauthorized File Repository Server Read

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Onapsis Security Advisory ONAPSIS-2015-002: SAP Business Objects  
Unauthorized File Repository Server Read via CORBA  
  
  
1. Impact on Business  
=====================  
  
By exploiting this vulnerability a remote unauthenticated attacker would be  
able to retrieve sensitive business data stored on the remote system.  
  
Risk Level: High  
  
  
2. Advisory Information  
=======================  
  
- - Public Release Date: 2015-02-25  
  
- - Subscriber Notification Date: 2015-02-25  
  
- - Last Revised: 2015-02-25  
  
- - Security Advisory ID: ONAPSIS-2015-002  
  
- - Onapsis SVS ID: ONAPSIS-00111  
  
- - CVE: CVE-2015-2073  
  
- - Researcher: Will Vandevanter  
  
- - Initial Base CVSS v2: 5.0 (AV:N/AC:L/AU:N/C:P/I:N/A:N)  
  
  
3. Vulnerability Information  
============================  
  
- - Vendor: SAP  
  
- - Affected Components:  
- BussinessObjects Edge 4.0  
(Check SAP Note 2018682 for detailed information on affected releases)  
  
- - Vulnerability Class: External Control of File Name or Path (CWE-73)  
  
- - Remotely Exploitable: Yes  
  
- - Locally Exploitable: No  
  
- - Authentication Required: No  
  
- - Original Advisory:  
http://www.onapsis.com/research/security-advisories/sap-business-objects-unauthorized-file-repository-server-read-via-corba  
  
4. Affected Components Description  
==================================  
  
Business Objects is part of the Business Intelligence platform from SAP.  
It has components that provide performance management, planning,  
reporting, query and analysis and enterprise information management.  
  
Every Business Objects installation provides a web service to interact  
with different platform services.  
  
  
5. Vulnerability Details  
========================  
  
The BusinessObjects File Repositoy Server (FRS) CORBA listener allows a  
user to read any file stored in the FRS without authentication. The only  
requirement is that the user know the name of the file in the FRS. For  
example, "œfrs://Input/a_103/019/000/4967/1b14796c5b0d5f2c.rpt". With  
knowledge of this filename, the user can read the file remotely without  
authentication.  
  
Note, using CORBA it also possible to test if a directory or file exists  
on the file system. Therefore, although unlikely, an attacker could  
guess directories and then filenames to brute-force file locations. This  
would be considerably easier with a predictable file naming convention.  
  
  
6. Solution  
===========  
  
SAP has released SAP Note 2018682 which provides patched versions of the  
affected components.  
  
The patches can be downloaded from  
https://service.sap.com/sap/support/notes/2018682  
Onapsis strongly recommends SAP customers to download the related  
security fixes and apply them to the affected components in order to  
reduce business risks.  
  
  
  
7. Report Timeline  
==================  
  
2014-01-16: Onapsis provides vulnerability information to SAP AG.  
2014-02-17: SAP confirms having the information of vulnerability.  
2014-10-14: SAP releases security patches.  
2015-02-25: Onapsis releases security advisory.  
  
  
About Onapsis Research Labs  
===========================  
  
Onapsis Research Labs provides the industry analysis of key security  
issues that impact business-critical systems and applications.  
Delivering frequent and timely security and compliance advisories with  
associated risk levels, Onapsis Research Labs combine in-depth knowledge  
and experience to deliver technical and business-context with sound  
security judgment to the broader information security community.  
  
  
About Onapsis, Inc.  
===================  
  
Onapsis gives organizations the adaptive advantage to succeed in  
securing business-critical applications by combining technology,  
research and analytics. Onapsis enables every security and compliance  
team an adaptive approach to focus on the factors that matter most to  
their business-critical applications that house vital data and run  
business processes including SAP Business Suite, SAP HANA and SAP Mobile  
deployments.  
  
Onapsis provides technology solutions including Onapsis X1, the de-facto  
SAP security auditing tool, and Onapsis Security Platform which delivers  
enterprise vulnerability, compliance, detection and response  
capabilities with analytics.  
  
The Onapsis Research Labs provide subject matter expertise that combines  
in-depth knowledge and experience to deliver technical and  
business-context with sound security judgment. This enables  
organizations to efficiently uncover security and compliance gaps and  
prioritize the resolution within applications running on SAP platforms.  
  
Onapsis delivers tangible business results including decreased business  
risk, highlighted compliance gaps, lower operational security costs and  
demonstrable value on investment.  
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