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             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.1082
 Security Bulletin: InstallShield generates installation executables which
          are vulnerable to an DLL-planting vulnerability affect
                     AppScan Standard (CVE-2016-2542)
                                4 May 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Security AppScan Standard
Publisher:         IBM
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-2542  

Reference:         ESB-2016.0998
                   ESB-2016.0986
                   ESB-2016.0806
                   ESB-2016.0805

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21981821

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: InstallShield generates installation executables which are
vulnerable to an DLL-planting vulnerability affect AppScan Standard
(CVE-2016-2542)

Security Bulletin

Document information

More support for:

IBM Security AppScan Standard

Software version:

9.0, 9.0.1, 9.0.2, 9.0.2.1, 9.0.3, 9.0.3.1

Operating system(s):

Windows

Software edition:

Standard

Reference #:

1981821

Modified date:

2016-05-02

Summary

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.

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 Security AppScan Standard - 9.0.3.1

IBM Security AppScan Standard - 9.0.3

IBM Security AppScan Standard - 9.0.2.1

IBM Security AppScan Standard - 9.0.2

IBM Security AppScan Standard - 9.0.1

IBM Security AppScan Standard - 9.0

Remediation/Fixes

Product                        VRMF                                                                                   Comments
IBM Security AppScan Standard  9.0.3,                       Install 9.0.3.2 according to the following instructions:
                               9.0.2.1, 9.0.2, 9.0.1, 9.0,  http://www.ibm.com/support/docview.wss?uid=swg24042152

Workarounds and Mitigations

None

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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

21/4/16 - Initial version.

*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.

- --------------------------END INCLUDED TEXT--------------------

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