Security Bulletin
Summary
InstallShield generates installation executables which are vulnerable to a DLL-planting that affects the IBM Tivoli Continuous Data Protection for Files Client.
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
The following levels of IBM Tivoli Continuous Data Protection for Files Client are affected:
- 6.3.1.0 through 6.3.1.15
Remediation/Fixes
This security exposure occurs only at installation time and does not affect an already installed Tivoli Continuous Data Protection for Files Client.
If you are not installing a fixed level of the IBM Tivoli Continuous Data Protection for Files Client (6.3.1.16) then the installation package is vulnerable to this security issue during installation and you must use the workaround provided below to prevent being exposed to the vulnerability.
IBM Tivoli Continuous Data Protection for Files Release | First Fixing VRM Level | Platform | Link to Fix |
6.3 | 6.3.1.16 | Windows x32 Windows x32 Starter Edition Windows x64 Windows x64 Starter Edition | http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FTivoli%2FTivoli+Continuous+Data+Protection+for+Files&fixids=6.3.1-TIV-CDP-x86_windows-FP0016&source=SAR http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FTivoli%2FTivoli+Continuous+Data+Protection+for+Files&fixids=6.3.1-TIV-CDP-SE-x86_windows-FP0016&source=SAR http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FTivoli%2FTivoli+Continuous+Data+Protection+for+Files&fixids=6.3.1-TIV-CDP-x64_windows-FP0016&source=SAR http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FTivoli%2FTivoli+Continuous+Data+Protection+for+Files&fixids=6.3.1-TIV-CDP-SE-x64_windows-FP0016&source=SAR |
Workarounds and Mitigations
This security exposure occurs only at installation time and does not affect an already installed Tivoli Continuous Data Protection for Files Client.
To prevent exposure to this security vulnerability, download and run the installation package from a clean directory using the following steps:
- As an administrator, create a new secure directory. The directory must not exist before and only the administrator should have write permission to it.
- Unzip or copy the files from your installation media into this new directory.
- Run the installation exe from this directory to install the product. Proceed with the installation as normal.
If installation of a Tivoli Continuous Data Protect for Files Client package below the fixing level (6.3.1.16) is required, then the above workaround should be used to avoid exposure to this vulnerability during the installation process. The workaround is not needed if the fixing level (6.3.1.16) or a higher level of the package is installed.
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References
Change History
13 April 2016 - Original version published
12 May 2016 - Updated CVE Information - CVSS Base Score and CVSS Vector
1 June 2016 - Updated CVE Information and Workarounds and Mitigations section
1 September 2016 - Updated Remediation/Fixes and Workarounds and Mitigations to clarify when exposure occurs
*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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Document Information
Modified date:
17 June 2018
UID
swg21980838