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Onapsis Security AdvisoryONAPSIS-2015-003: SAP Business Objects
Unauthorized File Repository Server Write via CORBA


1. Impact on Business
=====================

By exploiting this vulnerability a remote unauthenticated attacker would be
able to overwrite 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-2015-003

- - Onapsis SVS ID: ONAPSIS-00109

- - CVE: CVE-2015-2074

- - Researcher: Will Vandevanter

- - Initial Base CVSS v2: 6.4 (AV:N/AC:L/AU:N/C:N/I:P/A:P)


3. Vulnerability Information
============================

- - Vendor: SAP

- - Affected Components:
  - BussinessObjects Edge 4.0
  (Check SAP Note 2018681 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-write-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
the writing of any file stored in the FRS without authentication. If the
attacker wishes to overwrite a file, the only requirement is that the
user know the name of the file in the FRS. For example,
“frs://Input/a_103/019/000/4967/1b14796c5b0d5f2c.rpt”. With
knowledge of this filename, the user can write the file remotely without
authentication.

Note, using CORBA it is 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 brute-forcing files to
overwrite. This would be considerably easier with a predictable file
naming convention.


6. Solution
===========

SAP has released SAP Note 2018681 which provides patched versions of the
affected components.

The patches can be downloaded from
https://service.sap.com/sap/support/notes/2018681

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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