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Security Bulletin: Cross-Site Scripting Vulnerability in IBM Social Rendering Templates for Digital Data Connector (CVE-2016-8936)

Security Bulletin


Summary

A fix is available for a cross-site scripting vulnerability in "IBM Social Rendering Templates for Digital Data Connector" (CVE-2016-8936).

Vulnerability Details

CVEID: CVE-2016-8936
DESCRIPTION:
IBM Social Rendering Templates for Digital Data Connector is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session.
CVSS Base Score: 6.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118749 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Affected Products and Versions

IBM Social Rendering Templates for Digital Data Connector version 1.0

Remediation/Fixes

Workarounds and Mitigations

Until the updated version of "IBM Social Rendering Templates for Digital Data Connector" is installed, you can apply a workaround using the WCM Authoring UI.
Preparation (Required, if the "Social Lists Design" library is not listed in the WCM Authoring UI):
Navigate to "WCM Authoring" -> "Preferences" -> "Edit shared Settings" -> "Library Selection" -> Select the libary "Social Lists Design" -> "Add" -> "OK"

Workaround steps:

  1. Navigate to "WCM Authoring" -> "Social Lists Design" -> "Components" -> "Fragments" -> "Bean Message Error" -> "Edit"
  2. In HTML Markup find:
    [Plugin:ListRenderingContext action="getExceptionMessage" compute="always"]
  3. Add attribute escape="XML" to the element like this:
    [Plugin:ListRenderingContext escape="XML" action="getExceptionMessage" compute="always"]
  4. Save and Close

Now the workaround is applied. If you want remove the "Social Lists Design" library again from being listed in the WCM Authoring UI, these are the steps:
Navigate to "WCM Authoring" -> "Preferences" -> "Edit shared Settings" -> "Library Selection" -> Select the libary "Social Lists Design" -> "Remove" -> "OK"

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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.

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

18 November 2016: 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: 8.0, 8.5

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

Reference #: 1993895

Modified date: 18 November 2016