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AUSCERT External Security Bulletin Redistribution
ESB-2013.0781
Security Bulletin: WebSphere Portal vulnerability to HTTP response
splitting if home substitution enabled (CVE-2013-2950)
4 June 2013
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AusCERT Security Bulletin Summary
---------------------------------
Product: WebSphere Portal
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
Solaris
Windows
IBM i
i5/OS
z/OS
Impact/Access: Provide Misleading Information -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2013-2950
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21638864
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Security Bulletin: WebSphere Portal vulnerability to HTTP response splitting
if home substitution enabled (CVE-2013-2950)
Flash (Alert)
Document information
WebSphere Portal
Software version:
6.1, 7.0, 8.0
Operating system(s):
AIX, HP-UX, IBM i, Linux, Solaris, Windows, i5/OS, z/OS
Reference #:
1638864
Modified date:
2013-05-28
Abstract
When home substitution is enabled (disabled by default), WebSphere Portal
becomes vulnerable for HTTP Response Splitting.
Content
VULNERABILITY DETAILS:
DESCRIPTION:
When home substitution is enabled (disabled by default, parameter is
uri.home.substitution), Portal becomes vulnerable for HTTP Response Splitting.
An attacker can exploit this to set arbitrary content in the second response,
giving control over the appearance of the content rendered.
CVEID: CVE-2013-2950
CVSS Base Score: 3.5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/83618 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:
WebSphere Portal Version 6.1.0.x
WebSphere Portal Version 6.1.5.x
WebSphere Portal Version 7.0.0.x
WebSphere Portal Version 8.0.0.x
REMEDIATION:
APAR PM85071 addresses the issue and is included in the following cummulative
fixpacks.
For WebSphere Portal 6.1.0.3 and later APAR PM85071 is included in CF26
For WebSphere Portal 7.0.0.2 APAR PM85071 is included in CF21
Fix* APAR How to acquire fix
WebSphere Portal PM85071 Cumulative fixes for
6.1.0.3/6.1.5 WebSphere Portal 6.1.0.x/6.1.5.x:
Cumulative Fix 26 http://www.ibm.com/support/docview.wss?uid=swg24023835
or higher
WebSphere Portal PM85071 Cumulative fixes for
6.1.0.4/6.1.5.1 WebSphere Portal 6.1.0.x/6.1.5.x:
Cumulative Fix 26 http://www.ibm.com/support/docview.wss?uid=swg24023835
or higher
WebSphere Portal PM85071 Cumulative fixes for
6.1.0.5/6.1.5.2 WebSphere Portal 6.1.0.x/6.1.5.x:
Cumulative Fix 26 http://www.ibm.com/support/docview.wss?uid=swg24023835
or higher
WebSphere Portal PM85071 Cumulative fixes for
6.1.0.6/6.1.5.3 WebSphere Portal 6.1.0.x/6.1.5.x:
Cumulative Fix 26 http://www.ibm.com/support/docview.wss?uid=swg24023835
or higher
WebSphere Portal PM85071 Combined Cumulative fixes for
7.0.0.2 Cumulative WebSphere Portal 7.0.0.2:
Fix 21 or higher http://www.ibm.com/support/docview.wss?uid=swg24029452
WebSphere Portal PM85071 Combined Cumulative Fixes for
8.0.0 Cumulative WebSphere Portal 8.0.0.0:
Fix 5 or higher http://www.ibm.com/support/docview.wss?uid=swg24033155
WebSphere Portal PM85071 Combined Cumulative Fixes for
8.0.0.1 Cumulative WebSphere Portal 8.0.0.1:
Fix 5 or higher http://www.ibm.com/support/docview.wss?uid=swg24034497
None For WebSphere Portal 6.1.0.1, 6.1.0.2,
7.0.0 and 7.0.0.1 contact support.
Workaround(s):
Disable home substitution to work around the problem. The parameter is
uri.home.substitution, see the Information Center of WebSphere Portal:
v8: http://www.lotus.com/ldd/portalwiki.nsf/dx/Configuration_Service_wp8
v7: http://www.lotus.com/ldd/portalwiki.nsf/dx/Portal_configuration_services_wp7
v6.1: http://publib.boulder.ibm.com/infocenter/wpdoc/v6r1/index.jsp?topic=/com.ibm.wp.ent.doc_v615/admin/srvcfgref.html
Mitigation(s):
Apply the workaround until the APAR is installed.
CHANGE HISTORY
28 May 2013: Original Copy 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 Flash.
Note: 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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