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Security Bulletin: Vulnerability in Apache Commons affects Rational Developer for System z (CVE-2015-7450)

Security Bulletin


An Apache Commons Collections vulnerability for handling Java object deserialization was addressed by Rational Developer for System z

Vulnerability Details

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CVEID: CVE-2015-7450

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 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

Principal Product and Version(s)
  • Rational Developer for System z, versions and earlier
  • Rational Developer for z Systems, version 9.5


IBM has provided patches for all affected versions.

Follow the installation instructions in the README files included with the patch.

The fix can be obtained at the following locations:

Rational Developer for System z
Rational Developer for System z Interim Fix 1 for
Rational Developer for z Systems
Rational Developer for z Systems Interim Fix 1 for 9.5

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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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.


Related information

Change History

* 9 December 2015: 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 Security Bulletin.


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.

Document information

More support for: Rational Developer for System z
General Information

Software version: 9.1, 9.1.1,,, 9.5

Operating system(s): AIX, Linux, Windows, z/OS

Software edition: All Editions

Reference #: 1971643

Modified date: 09 December 2015