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Security Bulletin: Security Misconfiguration during Combined Cumulative Fix Installation Affects IBM WebSphere Portal (CVE-2018-1420)

Security Bulletin


Summary

IBM WebSphere Portal resets access control settings to the out of the box configuration during Combined Cumulative Fix (CF) installation. This can lead to security miss-configuration of the installation (CVE-2018-1420).

Vulnerability Details

CVEID: CVE-2018-1420
DESCRIPTION: IBM WebSphere Portal resets access control settings to the out of the box configuration during Combined Cumulative Fix (CF) installation. This can lead to security miss-configuration of the installation.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/138950 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

Affected Product

Affected Versions
IBM WebSphere Portal 9.0.0.0 - 9.0.0.0 CF15
IBM WebSphere Portal 8.5.0.0 - 8.5.0.0 CF15
IBM WebSphere Portal 8.0.0.0 - 8.0.0.1 CF22
IBM WebSphere Portal 7.0.0.0 - 7.0.0.2 CF30

 


For unsupported versions IBM recommends upgrading to a fixed, supported version of the product.

 

Remediation/Fixes

Product VRMF APARs Fix
IBM WebSphere Portal 9.0 PI91232, PI94709 Upgrade only to Cumulative Fix 16 (CF16) or newer Cumulative Fixes. If Cumulative Fix 15 (CF15) or any older Cumulative Fix has been applied, you might need to correct access control settings of out of the box resources manually. See "Workarounds and Mitigations" section for details.
IBM WebSphere Portal 8.5 PI91232, PI94709 Upgrade only to Cumulative Fix 16 (CF16) or newer Cumulative Fixes. If Cumulative Fix 15 (CF15) or any older Cumulative Fix has been applied, you might need to correct access control settings of out of the box resources manually. See "Workarounds and Mitigations" section for details.
 
IBM WebSphere Portal 8.0.0.0 through 8.0.01 PI94883, PI95100, PI95153, PI95154, PI95155, PI95156 Upgrade to Fix Pack 8.0.0.1 and apply only Cumulative Fix 23 (CF23) or newer. If Cumulative Fix 22 (CF22) or any older Cumulative Fix has been applied, you might need to correct access control settings of out of the box resources manually. See "Workarounds and Mitigations" section for details.
IBM WebSphere Portal 7.0.0.0 through 7.0.0.2   There will no further Cumulative Fixes be issued. If  Cumulative Fix 30 (CF30) or any older Cumulative Fix has been applied, you might need to correct access control settings of out of the box resources manually. See " Workarounds and Mitigations" section for details.

Workarounds and Mitigations

Prior to the fixed Cumulative Fix versions as listed in the "Remediation/Fixes", the installation of a Combined Cumulative Fix (CF) resets access control settings for the IBM WebSphere Portal out of the box resources. The out of the box access control settings are restored for them. If the access control settings of these out of the box resources had been changed before, you need to set them again to their customized values after Cumulative Fix installation.

See the IBM Knowledge center how to manage the access control and get an overview of initial access control settings.

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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.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

25 September 2018: Original version published
24 October 2018: Corrected APAR numbers

*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.

Document information

More support for: WebSphere Portal

Component: --

Software version: 7.0, 8.0, 8.5, 9.0

Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS

Reference #: 2014276

Modified date: 24 October 2018