Security Bulletin: Flexera InstallShield has a security vulnerability that affects Content Manager Enterprise Edition Client for Windows (CVE-2016-2542)

Security Bulletin

Summary

Flexera InstallShield has a security vulnerability that could be exploited in Content Manager Enterprise Edition V8.4.3 Client for Windows. The Content Manager Enterprise Edition V8.4.3 base and fixpack utilizes the Flexera InstallShield.

Vulnerability Details

CVEID: CVE-2016-2542
DESCRIPTION: Flexera InstallShield could allow a local attacker to gain elevated privileges on the system, caused by an untrusted search path. An attacker could exploit this vulnerability using a Trojan horse DLL in the current working directory of a setup-launcher executable file to gain elevated privileges on the system.
CVSS Base Score: 7.8
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Content Manager Enterprise Edition V8.4.3

Remediation/Fixes

Product	VRMF	Remediation/First Fix
Content Manager Enterprise Edition	8.4.3	Fix is now available in 8.4.3 Fix Pack 5 on Fix Central.

Workarounds and Mitigations

Install the fix pack by running the installation wizard or by running a silent installation.

To avoid an untrusted search path vulnerability where users could gain increased privileges, perform the following additional steps:
1. Clear all contents (files, sub-directories and etc.,) of your default download directory/location, if any.
2. Create a new secure directory in temporary location (such that elevated privileges are required to access this directory).
3. Copy/extract the setup.exe executable to the secure directory created in Step 2.
4. Launch the executable from the secure directory and wait until it completes.

Important: Do not enter line breaks in the command that you enter to start the installation program.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

8 July 2016: Revised version published.
27 May 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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Tips

Security Bulletin: Flexera InstallShield has a security vulnerability that affects Content Manager Enterprise Edition Client for Windows (CVE-2016-2542)