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AUSCERT External Security Bulletin Redistribution
ESB-2015.3029
Vulnerability in Apache Commons affects IBM WebSphere Portal Server
7 December 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM WebSphere Portal Server
Publisher: IBM
Operating System: AIX
HP-UX
IBM i
Linux variants
Solaris
Windows
z/OS
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-7450
Reference: ASB-2015.0112
ASB-2015.0108.2
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21971340
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Security Bulletin: Vulnerability in Apache Commons affects IBM WebSphere
Portal Server (CVE-2015-7450)
Security Bulletin
Document information
More support for:
WebSphere Portal
Software version:
7.0, 8.0, 8.5
Operating system(s):
AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS
Reference #:
1971340
Modified date:
2015-12-02
Summary
Vulnerability in Apache Commons affects IBM WebSphere Portal Server
(CVE-2015-7450)
Vulnerability Details
An Apache Commons Collections vulnerability for handling Java object
deserialization was addressed by IBM WebSphere Portal Server.
CVEID: CVE-2015-7450
DESCRIPTION: Apache Commons Collections could allow a remote attacker to
execute arbitrary code on the system, caused by the deserialization of data
with Java InvokerTransformer class. By sending specially crafted data, an
attacker could exploit this vulnerability to execute arbitrary Java code on
the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/107918 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
WebSphere Portal 8.5
WebSphere Portal 8.0
WebSphere Portal 7
For unsupported versions IBM recommends upgrading to a fixed, supported
version of the product.
Remediation/Fixes
To remediate this vulnerability you need to apply fixes for both IBM WebSphere
Application Server and IBM WebSphere Portal Server.
For IBM WebSphere Application Server updates refer to this bulletin:
Security Bulletin: Vulnerability in Apache Commons affects IBM WebSphere
Application Server (CVE-2015-7450)
For IBM WebSphere Portal Server apply the fixes PI52627, PI52647, PI52821,
PI52882 as soon as practical or a Cumulative Fix containing the fixes PI52627,
PI52647, PI52821, PI52882.
For 8.5.0 Upgrade to Cumulative Fix 08 (CF08) and then apply the Interim Fixes
PI52627, PI52647, PI52882.
- --or--
Upgrade to Cumulative Fix 09 (CF09), targeted for 1Q 2016.
(Combined Cumulative Fixes for WebSphere Portal 8.5.0.0:
http://www-01.ibm.com/support/docview.wss?uid=swg24037786)
For 8.0.0 through 8.0.0.1 Upgrade to Fix Pack 8.0.0.1 with Cumulative Fix 19
(CF19) and then apply the Interim Fixes PI52627, PI52647, PI52882.
- --or--
Upgrade to Fix Pack 8.0.0.1 with Cumulative Fix 20 (CF20), targeted for 1Q
2016.
(Combined Cumulative Fixes for WebSphere Portal 8.0.0.1:
http://www-01.ibm.com/support/docview.wss?uid=swg24034497)
For 7.0.0 through 7.0.0.2 Upgrade to Fix Pack 7.0.0.2 with Cumulative Fix 29
(CF29) and then apply the Interim Fixes PI52627, PI52821, PI52882.
(Combined Cumulative fixes for WebSphere Portal 7.0.0.2:
http://www.ibm.com/support/docview.wss?uid=swg24029452)
IBM recommends that you review your entire environment to identify vulnerable
releases of the open-source Apache Commons Collections and take appropriate
mitigation and remediation actions.
Note on IBM-supplied Struts Portlet Frameworks
The IBM-supplied Struts Portlet Frameworks (both legacy IBM proprietary API
and the more recent JSR-168 Standard API versions) are no longer supported.
The above fixes will not perform any upgrade to these frameworks. If you are
still using the IBM-supplied Struts Portlet framework in any way, including
using custom portlets developed based on the samples, you should investigate
the portlets and manually upgrade the Apache Commons Collections jars that may
be part of the portlets and/or framework to version 3.2.2 or later, available
from Apache. See
http://commons.apache.org/proper/commons-collections/release_3_2_2.html
Any portlets that you wish to write using Struts should be based directly on
the Apache Struts Portlet support. See the following links:
http://portals.apache.org/bridges/bridges-struts/
https://struts.apache.org/docs/portlet-plugin.html
https://struts.apache.org/docs/struts-2-portlet-tutorial.html
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 v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
02 December 2015: 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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