IBM Support

Security Bulletin: Impersonation Issue Affects IBM WebSphere Portal (CVE-2018-1672)

Security Bulletin


Summary

Impersonation may lead to incorrect user context in IBM WebSphere Portal (CVE-2018-1672)

Vulnerability Details

CVEID: CVE-2018-1672
DESCRIPTION: IBM WebSphere Portal may fail to set the correct user context in certain impersonation scenarios, which can allow a user to act with the identity of a different user.
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/144958 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L)

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 CF23
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 PH00088 Upgrade to Cumulative Fix 16 (CF16).
IBM WebSphere Portal 8.5 PH00088 Upgrade to Cumulative Fix 16 (CF16).
IBM WebSphere Portal 8.0.0.0 through 8.0.01 PH00088 Upgrade to Fix Pack 8.0.0.1 with Cumulative Fix 23 (CF23) and then apply the Interim Fix PH00088.
IBM WebSphere Portal 7.0.0.0 through 7.0.0.2 PH00088 Upgrade to Fix Pack 7.0.0.2 with Cumulative Fix 30 (CF30) and then apply the Interim Fix PH00088.

Workarounds and Mitigations

Disable impersonation feature. See https://www.ibm.com/support/knowledgecenter/SSHRKX_8.5.0/mp/admin-system/impers_enable_disable.html for details.

Get Notified about Future Security Bulletins

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

*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

Software version: 7.0, 8.0, 8.5, 9.0

Operating system(s): Platform Independent

Reference #: 0716981

Modified date: 25 September 2018