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AUSCERT External Security Bulletin Redistribution
ESB-2016.1467
Security Bulletin: Vulnerability in InstallShield/InstallAnywhere affects
IBM Informix CSDK and Server installation on
Windows(CVE-2016-2542, CVE-2016-4560)
10 June 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Informix
Publisher: IBM
Operating System: AIX
HP-UX
Linux variants
OS X
Solaris
Windows
Impact/Access: Increased Privileges -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2016-4560 CVE-2016-2542
Reference: ESB-2016.0805
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg21984231
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Security Bulletin: Vulnerability in InstallShield/InstallAnywhere affects IBM
Informix CSDK and Server installation on Windows(CVE-2016-2542,
CVE-2016-4560)
Security Bulletin
Document information
More support for:
Informix Servers
Software version:
11.5, 11.7, 12.1
Operating system(s):
AIX, HP-UX, Linux, OS X, Solaris, Windows
Reference #:
1984231
Modified date:
2016-06-08
Summary
InstallShield/installAnywhere generates installation executables which are
vulnerable to a DLL-planting affecting the installation of IBM Informix CSDK
and Dynamic Server on Windows.
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)
CVEID:
CVE-2016-4560
DESCRIPTION:
Flexera InstallAnywhere 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/113016
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
IBM Informix CSDK 3.50, 3.70, 4.10 for Windows
IBM Informix Dynamic Server 11.50, 11.70, 12.10 for Windows
Remediation/Fixes
None
Workarounds and Mitigations
Informix CSDK 3.50 and Informix Server 11.50 use InstallShield. For these
products use the following steps for installation:
As an administrator, create a new secure folder. Only the administrator
should have write permission to the new folder.
Unzip the files from your installation media into this new folder.
Rename the file setup.exe to ids_install.exe or clientsdk_install.exe. Do not
skip this step.
Run ids_install.exe or clientsdk_install.exe from this directory to install
the product. Proceed with the installation as normal.
As an administrator, create a new secure folder. Only the administrator
should have write permission to the new folder.
Unzip the files from your installation media into this new folder.
Run ids_install.exe or clientsdk_install.exe from this directory to install
the product. Proceed with the installation as normal.
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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
8 June 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.
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