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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.0207
     Security Bulletin: Vulnerabilities in OpenSSL affect IBM Sterling
           Connect:Direct for Microsoft Windows (CVE-2016-2177,
               CVE-2016-2183, CVE-2016-6306, CVE-2016-8610)
                              24 January 2017

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

Product:           IBM Sterling Connect:Direct for Microsoft Windows
Publisher:         IBM
Operating System:  Windows
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
                   Denial of Service      -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-8610 CVE-2016-6306 CVE-2016-2183
                   CVE-2016-2177  

Reference:         ESB-2017.0055

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21996795

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Security Bulletin: Vulnerabilities in OpenSSL affect IBM Sterling
Connect:Direct for Microsoft Windows (CVE-2016-2177, CVE-2016-2183,
CVE-2016-6306, CVE-2016-8610)

Security Bulletin

Document information

More support for:

Sterling Connect:Direct for Microsoft Windows

Software version:

4.6

Operating system(s):

Windows

Reference #:

1996795

Modified date:

23 January 2017

Summary

OpenSSL is used by IBM Sterling Connect:Direct for Microsoft Windows. IBM
Sterling Connect:Direct for Microsoft Windows has addressed the applicable
CVEs.

Vulnerability Details

CVEID:

CVE-2016-2177

DESCRIPTION:

OpenSSL is vulnerable to a denial of service, caused by the incorrect use of
pointer arithmetic for heap-buffer boundary checks. By leveraging unexpected
malloc behavior, a remote attacker could exploit this vulnerability to
trigger an integer overflow and cause the application to crash.

CVSS Base Score: 5.9

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/113890

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:

CVE-2016-2183

DESCRIPTION:

OpenSSL could allow a remote attacker to obtain sensitive information, caused
by an error in the DES/3DES cipher, used as a part of the SSL/TLS protocol.
By capturing large amounts of encrypted traffic between the SSL/TLS server
and the client, a remote attacker able to conduct a man-in-the-middle attack
could exploit this vulnerability to recover the plaintext data and obtain
sensitive information. This vulnerability is known as the SWEET32 Birthday
attack.

CVSS Base Score: 3.7

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/116337

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:

CVE-2016-6306

DESCRIPTION:

OpenSSL is vulnerable to a denial of service, caused by missing message
length checks when parsing certificates. A remote authenticated attacker
could exploit this vulnerability to trigger an out-of-bounds read and cause a
denial of service.

CVSS Base Score: 4.3

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/117112

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)

CVEID:

CVE-2016-8610

DESCRIPTION:

SSL/TLS protocol is vulnerable to a denial of service, caused by an error
when processing ALERT packets during a SSL handshake. By sending specially-
crafted packets, a remote attacker could exploit this vulnerability to cause
the application to stop responding.

CVSS Base Score: 7.5

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/118296

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

IBM Sterling Connect:Direct for Microsoft Windows 4.6.0

Remediation/Fixes


Product                                            VRMF    APAR     Remediation/First Fix
IBM Sterling Connect:Direct for Microsoft Windows  4.6.0   IT18640  Apply 4.6.0.6_iFix013, available on Fix Central

For older versions/releases IBM recommends upgrading to a fixed, supported
version/release/platform of the product.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support
alerts like this.

Important note

IBM strongly suggests that all System z customers be subscribed to the System
z Security Portal to receive the latest critical System z security and
integrity service. If you are not subscribed, see the instructions on the
System z Security web site. Security and integrity APARs and associated fixes 
will be posted to this portal. IBM suggests reviewing the CVSS scores and 
applying all security or integrity fixes as soon as possible to minimize any 
potential risk.

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
https://www.openssl.org/

Acknowledgement

None

Change History

23 January 2017: 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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