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             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.2379
Security Bulletin: OpenSSL and OpenVPN vulnerabilities affect IBM Rational
                Team Concert (CVE-2016-2183, CVE-2016-6329)
                              11 October 2016

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

Product:           IBM Rational Team Concert
Publisher:         IBM
Operating System:  AIX
                   IBM i
                   Linux variants
                   OS X
                   Solaris
                   Windows
Impact/Access:     Access Privileged Data         -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-6329 CVE-2016-2183 

Reference:         ESB-2016.2238

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21991482

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Security Bulletin: OpenSSL and OpenVPN vulnerabilities affect IBM Rational
Team Concert (CVE-2016-2183, CVE-2016-6329)

Security Bulletin

Document information

More support for:

Rational Team Concert

General Information

Software version:

4.0, 4.0.0.1, 4.0.0.2, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 5.0,
5.0.1, 5.0.2, 6.0, 6.0.1, 6.0.2

Operating system(s):

AIX, IBM i, Linux, OS X, Solaris, Windows

Reference #:

1991482

Modified date:

2016-10-07

Summary

OpenSSL and OpenVPN vulnerabilities affect IBM Rational Team Concert. OpenSSL
and OpenVPN are used by Rational BuildForge Agent shipped with IBM Rational
Team Concert.

Vulnerability Details

CVEID:

CVE-2016-2183

DESCRIPTION:

OpenSSL could allow a remote attacker to obtain sensitive information, caused
by an error in the in the Triple-DES on 64-bit block 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-2016-6329

DESCRIPTION:

OpenVPN could allow a remote attacker to obtain sensitive information, caused
by an error in the in the Triple-DES on 64-bit block 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/116341

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)

Affected Products and Versions

Rational Team Concert 4.0 - 4.0.7

Rational Team Concert 5.0 - 5.0.2

Rational Team Concert 6.0 - 6.0.2

Remediation/Fixes

The remediation for this Security issues is to disable triple-DES.

In the Build Forge Agent when triple-DES is enabled, it also enables SSL.

In order to disable triple-DES follow steps below:

1. Open bfagent.conf file, the file can be located at:

Windows default: C:\Program Files\IBM\Build Forge\Agent\BFAgent.conf

UNIX and Linux default: /etc/bfagent.conf

2. Add the following line in bfagent.conf after the line of "SSLProtocol":

SSLCipherSuite ALL:!ADH:!aNULL:!eNULL:!LOW:!EXP:!RC4:!DES-CBC3:+HIGH:+MEDIUM

Note: if the build forge agent is not using SSL, comment out this line.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

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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

Change History

Initial Publication: 07 October 2016

*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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