Potential security exposure with IBM WebSphere Application Server after installing PM44303

Content

Affected Versions:
The problem affects the following IBM WebSphere Application Server Distributed platforms, i5/OS platforms, z/OS platform Versions and IBM WebSphere Application Server Hypervisor Edition with:

Version 6.1.0.43

Version 7.0.0.21 through 7.0.0.23

Version 8.0.0.2 through 8.0.0.4

Version 8.5.0.0 (Full Profile only)

The problem does not occur on the following versions:

Version 6.0.2

Version 6.1.0.0 through 6.1.0.41

Version 7.0.0.0 through 7.0.0.19

Version 8.0.0.0 through 8.0.0.1

Version 8.5.0.0 (Liberty Profile only)

CVE ID: CVE-2012-3325 (PM71296)

Problem Description:
If you have installed an Interim Fix for PM44303 or a Fix Pack listed above, you have the potential for an authenticated user to bypass security restrictions, caused by an error when validating user credentials. This could allow a user to gain unauthorized administrative access to an application and potentially gain access to confidential and critical customer data.

CVSS:
CVSS Base Score: 6.0
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/77959 for the current score
CVSS Environmental Score*: undefined
CVSS String: (AV:N/AC:M/Au:S/C:P/I:P/A:P)

Solutions:
Apply Interim Fix PM71296, or a Fix Pack containing the APAR, as noted below.

For IBM WebSphere Application Server for distributed operating systems and IBM WebSphere Application Server Hypervisor Edition:

For V8.5.0.0 Full Profile:

Apply Interim Fix APAR PM71296

--OR--

Apply Fix Pack 1 (8.5.0.1), or later (targeted to be available end of October 2012).

For 8.0.0.2 through 8.0.0.4:

Apply Interim Fix APAR PM71296

--OR--

Apply Fix pack 5 (8.0.0.5) or later (targeted to be available mid-November 2012).

For V7.0.0.21 through 7.0.0.23:

Apply Interim Fix APAR PM71296

--OR--

Apply Fix pack 25 (7.0.0.25) or later (targeted to be available late September 2012).

For V6.1.0.43:

Apply Interim Fix APAR PM71296

--OR--

Apply Fix pack 45 (6.1.0.45) or later (targeted to be available late September 2012).

For IBM WebSphere Application Server for i5/OS operating systems:

For V8.5.0.0 Full Profile:

Apply Interim Fix APAR PM71296

--OR--

Apply the WebSphere Application Server PTF group which includes Fix Pack 1 (8.5.0.1), or later (targeted to be available end of October 2012).

For V8.0.0.2 through 8.0.0.4:

Apply Interim Fix APAR PM71296

--OR--

Apply the WebSphere Application Server PTF group which includes Fix Pack 5 (8.0.0.5) or later (targeted to be available mid-November 2012).

For V7.0.0.21 through 7.0.0.23:

Apply Interim Fix APAR PM71296

--OR--

Apply the WebSphere Application Server PTF group which includes Fix Pack 25 (7.0.0.25) or later (targeted to be available late September 2012).

For V6.1.0.43:

Apply Interim Fix APAR PM71296

--OR--

Apply the WebSphere Application Server PTF group which includes Fix Pack 45 (6.1.0.45) or later (targeted to be available late September 2012).

For WebSphere Application Server for z/OS operating systems:

For V8.5.0.0 Full Profile:

Apply Interim Fix APAR PM71296

--OR--

Apply Fix Pack 1 (8.5.0.1), or later (targeted to be available end of October 2012).

For V8.0.0.2 through 8.0.0.4:

Apply Interim Fix APAR PM71296

--OR--

Apply Fix Pack 5 (8.0.0.5) or later (targeted to be available mid November 2012).

For z/OS operating systems Version 7 and Version 6.1

You can apply the appropriate prebuilt ++APAR below or open a PMR (Problem Management Record) with IBM WebSphere Application Server for z/OS Technical support to request a custom-built ++APAR.

For V7.0.0.23:

Download and apply ++APAR BM71296

--OR--

Apply APAR PM71296 by installing PTFs for Fix Pack 25 (7.0.0.25) or later (targeted to be available late September 2012).

For V7.0.0.21:

Download and apply ++APAR CM71296

--OR--

Apply APAR PM71296 by installing PTFs for Fix Pack 25 (7.0.0.25) or later (targeted to be available late September 2012).

For V6.1.0.43:

Download and apply ++APAR AM71462. The ++APAR AM71462 will install for 6.1.0.43 Base Edition, or for WebSphere Application Server V6.1 Feature Pack for EJB 3.0 on z/OS or WebSphere Application Server V6.1 Feature Pack for Web Services on z/OS.

--OR--

Apply APAR PM71462 by installing PTFs for Fix Pack 45 (6.1.0.45) or later (targeted to be available late September 2012).

Note: Customers that require a fix at a different WebSphere service level not mentioned above, or those who are running with a service level mentioned above but also have an existing ++APAR, will need to open a PMR to work with IBM Technical Support personnel to determine the best method for providing a fix for their system. Be prepared to provide to IBM your current service level, and any existing ++APARs that are already received/applied to your system.

Instructions for installing ++APARs:

1. FTP the file to your system in BINARY, into a FIXED RECORD LENGTH 1024 data set.

2. Force these DCB attributes using the following TSO FTP client command right before the GET command:

LOCSITE LRECL=1024 RECFM=FB BLKSIZE=0

If the ++APAR is quite large, then you can also pass along data set allocation information on the LOCSITE command. The example below gives the ++APAR file 300 cylinders in its primary and secondary extents.

These numbers are just examples:

LOCSITE LRECL=1024 RECFM=FB BLKSIZE=0 PRI=300 SEC=300 CYL

3. UNTERSE the file

4. SMP/E RECEIVE and APPLY the ++APAR

5. You must SMP/E RESTORE OFF the ++APAR before installing further WebSphere maintenance.

Additional documentation:

For additional details and information on WebSphere Application Server product updates:

For Distributed, see Recommended fixes for WebSphere Application Server.

For i5/OS, see WebSphere Application Server for i5/OS.

For z/OS, see WebSphere Application Server for z/OS

REFERENCES:

Complete CVSS Guide

On-line Calculator V2

*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.