Security Bulletin: A security vulnerability has been identified in Apache Commons and IBM WebSphere Application Server Liberty Profile shipped with IBM Support Assistant Team Server (CVE-2015-7450)

Created by Andrew Cook on Wed, 11/18/2015 - 10:47

Security Bulletin

Summary

IBM WebSphere Application Server Liberty Profile and Apache Commons are shipped as components of IBM Support Assistant Team Server. The recommended solution is to install the fix made available by IBM WebSphere Application Server and remove the Apache Commons Collections Library bundled with IBM Support Assistant Team Server.

Vulnerability Details

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

IBM Support Assistant Team Server version 5.0.0, 5.0.1, 5.0.1.1, 5.0.2 and 5.0.2.1

Remediation/Fixes

The recommended solution is to install the fix made available by IBM WebSphere Application Server and remove the Apache Commons Collections Library bundled with IBM Support Assistant Team Server.

For V5.0.0 through 5.0.2.1:

If you are not at the latest version of IBM Support Assistant (V5.0.2.1), you need to upgrade http://www-01.ibm.com/software/support/isa/teamserver.html
Remove the Apache Commons Collections v3.2.1 library under <isa_install>/ISA5/wlp/usr/servers/isa/apps/ISA5.ear/lib
Apply the IBM WebSphere Application Server Liberty Profile Interim Fix

Download the archive fix 8556-wlp-archive-IFPI52103.jar that applies to the Liberty profile, fixpack 8.5.5.6.
Save the 8556-wlp-archive-IFPI52103.jar file to the <isa_install>/ISA5/ directory
Open the console and run the command "java -jar 8556-wlp-archive-IFPI52103.jar"
Press enter to accept the default directory value <isa_install>/ISA5/wlp
Stop ISA
Once you start ISA you should see the following message on the <isa_install>/ISA5/wlp/usr/servers/isa/logs/console.log

[AUDIT ] CWWKF0015I: The server has the following interim fixes installed: PI52103.

Refer to Security Bulletin: Vulnerability in Apache Commons affects IBM WebSphere Application Server (CVE-2015-7450) for vulnerability details and additional information about fixes.

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.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

20 November, 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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Tips

Security Bulletin: A security vulnerability has been identified in Apache Commons and IBM WebSphere Application Server Liberty Profile shipped with IBM Support Assistant Team Server (CVE-2015-7450)