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AUSCERT External Security Bulletin Redistribution
ESB-2016.1620
Security Bulletin: IBM Tealeaf Customer Experience
installers vulnerable to attack (CVE-2016-2542)
29 June 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Tealeaf Customer Experience
Publisher: IBM
Operating System: Windows
Linux variants
Virtualisation
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2016-2542
Reference: ESB-2016.0805
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg21981024
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Security Bulletin: IBM Tealeaf Customer Experience installers vulnerable to
attack (CVE-2016-2542)
Security Bulletin
Document information
More support for:
Tealeaf Customer Experience
Software version:
Version Independent
Operating system(s):
Platform Independent
Reference #:
1981024
Modified date:
2016-06-28
Summary
Installation programs for the Microsoft Windows components of IBM Tealeaf
Customer Experience are vulnerable to attack under certain conditions.
Vulnerability Details
CVEID:
CVE-2016-2542
DESCRIPTION:
Flexera InstallShield could allow a remote attacker to execute arbitrary code
on the system. The application does not directly specify the fully qualified
path to a dynamic-linked library (schannel.dll) when running on Microsoft
Windows. By persuading a victim to open a specially-crafted file from a
WebDAV or SMB share using a vulnerable application, a remote attacker could
exploit this vulnerability via a specially-crafted library to execute
arbitrary code on the system.
CVSS Base Score: 8.8
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/110914
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
Affected Products and Versions
IBM Tealeaf Customer Experience: v8.0-v9.0.2
Remediation/Fixes
Product VRMF Remediation/First Fix
IBM Tealeaf Customer Experience all versions Discard any Windows installation images containing a 'setup.exe' file in the image root and download new images from the original source. Where new images are not available, you can contact the Technical Support team for guidance.
Workarounds and Mitigations
When running any Tealeaf Windows installation or upgrade program with a
'setup.exe' file, ensure that the directory from which the installation is
run and all other directories listed in the PATH environment variable do not
contain untrusted versions of any executable files.
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References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
28 June 2016 Initial publication
*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.
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