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AUSCERT External Security Bulletin Redistribution
ESB-2015.1896
Security Bulletin: Insufficient authorization in Service REST API and cross
site scripting vulnerability in REST API affecting IBM
Business Process Manager (CVE-2015-1905, CVE-2015-1906)
20 July 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Business Process Manager Advanced
Publisher: IBM
Operating System: AIX
Linux variants
Solaris
Windows
z/OS
Impact/Access: Cross-site Scripting -- Remote with User Interaction
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-1906 CVE-2015-1905
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21700717
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Security Bulletin: Insufficient authorization in Service REST API and cross
site scripting vulnerability in REST API affecting IBM Business Process
Manager (CVE-2015-1905, CVE-2015-1906)
Security Bulletin
Document information
More support for:
IBM Business Process Manager Advanced
Security
Software version:
7.5, 7.5.0.1, 7.5.1, 7.5.1.1, 7.5.1.2, 8.0, 8.0.1, 8.0.1.1, 8.0.1.2, 8.0.1.3,
8.5, 8.5.0.1, 8.5.5, 8.5.6
Operating system(s):
AIX, Linux, Linux zSeries, Solaris, Windows, z/OS
Reference #:
1700717
Modified date:
2015-07-17
Summary
IBM Business Process Manager REST API is vulnerable to cross site scripting
due to insufficiently restricted parameter values for controlling content
types. IFixes shipped with this advisory also close an additional
vulnerability due to insufficient authorization checks on interacting with
services via the REST API.
Vulnerability Details
CVEID: CVE-2015-1905
DESCRIPTION: IBM Business Process Manager allows users to manipulate variable
values of tasks that these users are not authorized to see or update.
CVSS Base Score: 4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/101729 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:S/C:N/I:P/A:N)
CVEID: CVE-2015-1906
DESCRIPTION: IBM Business Process Manager is vulnerable to cross-site
scripting, caused by improper validation of user-supplied input. A remote
attacker could exploit this vulnerability using a specially-crafted URL to
execute script in a victim's Web browser within the security context of the
hosting Web site, once the URL is clicked. An attacker could use this
vulnerability to steal the victim's cookie-based authentication credentials.
CVSS Base Score: 3.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/101730 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:N/I:P/A:N)
Affected Products and Versions
IBM Business Process Manager V7.5.x through V8.5.6.0
Remediation/Fixes
Install the interim fix for APAR JR52772 as appropriate for your current IBM
Business Process Manager version.
IBM Business Process Manager Express
IBM Business Process Manager Standard
IBM Business Process Manager Advanced
If you are on earlier unsupported releases, IBM strongly recommends to
upgrade.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
Important note
IBM strongly suggests that all System z customers be subscribed to the System
z Security Portal to receive the latest critical System z security and
integrity service. If you are not subscribed, see the instructions on the
System z Security web site. Security and integrity APARs and associated fixes
will be posted to this portal. IBM suggests reviewing the CVSS scores and
applying all security or integrity fixes as soon as possible to minimize any
potential risk.
References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
2015-07-17: Original Version Published
*The CVSS Environment Score is customer environment specific and will
ultimately impact the Overall CVSS Score. Customers can evaluate the impact of
this vulnerability in their environments by accessing the links in the
Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT
OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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