Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2015.1683
Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects IBM
Cognos Command Center (CVE-2015-4000) and Security Bulletin: Vulnerability
in Diffie-Hellman ciphers affects IBM Cognos Controller (CVE-2015-4000)
29 June 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Cognos Command Center
IBM Cognos Controller
Publisher: IBM
Operating System: Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Resolution: Mitigation
CVE Names: CVE-2015-4000
Reference: ESB-2015.1673
ESB-2015.1671
ESB-2015.1670
ESB-2015.1669
ESB-2015.1663
ESB-2015.1655
ESB-2015.1640
ESB-2015.1623
ESB-2015.1614
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21960508
http://www-01.ibm.com/support/docview.wss?uid=swg21960454
Comment: This bulletin contains two (2) IBM security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects IBM Cognos
Command Center (CVE-2015-4000)
Document information
More support for:
Cognos Command Center
Software version:
10.1, 10.2, 10.2.1, 10.2.2
Operating system(s):
Windows
Reference #:
1960508
Modified date:
2015-06-27
Security Bulletin
Summary
The Logjam Attack on TLS connections using the Diffie-Hellman (DH) key
exchange protocol affects IBM Cognos Command Center.
Vulnerability Details
CVEID: CVE-2015-4000
DESCRIPTION: The TLS protocol could allow a remote attacker to obtain
sensitive information, caused by the failure to properly convey a DHE_EXPORT
ciphersuite choice. An attacker could exploit this vulnerability using
man-in-the-middle techniques to force a downgrade to 512-bit export-grade
cipher. Successful exploitation could allow an attacker to recover the session
key as well as modify the contents of the traffic. This vulnerability is
commonly referred to as "Logjam".
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/103294 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Cognos Command Center 10.2.2
IBM Cognos Command Center 10.2.1
IBM Cognos Command Center 10.2
IBM Cognos Command Center 10.1
Remediation/Fixes
The recommended solution is to apply the IBM JRE 6.0 SR16FP5 to the following
versions of
IBM Cognos Command Center:
IBM Cognos Command Center 10.2.2
IBM Cognos Command Center 10.2.1
IBM Cognos Command Center 10.2
IBM Cognos Command Center 10.1
The fix for all affected versions is found here:
http://www.ibm.com/support/fixcentral/swg/quickorder?parent=Cognos&product=ibm/Information+Management/Cognos+Command+Center&release=10.2.2&platform=Windows+32-bit,+x86&function=fixId&fixids=10.2.2-BA-CCC-Win32-JRE-60SR16FP5
Installation instructions for applying this fix.
For Microsoft Windows servers where the Agent or Server component is
installed.
1. Download the 32 bit IBM Java JRE (file name: ibm-java-jre-60-win-i386.zip,
Size: 75 MB).
2. Stop the CccServer, CccQueue and CccAgent Microsoft Windows services.
3. For IBM Cognos Command Center 10.1 and 10.2: Rename the
<INSTALLDIR>\Common\java directory to <INSTALLDIR>\Common\java.orig
4. For IBM Cognos Command Center 10.2.1: Rename the
<INSTALLDIR>\Common\java.6.0.16.0 directory to
<INSTALLDIR>\Common\java.6.0.16.0.orig
5. For IBM Cognos Command Center 10.2.2: Rename the
<INSTALLDIR>\Common\java.6.0.16 directory to
<INSTALLDIR>\Common\java.6.0.16.orig
6. For IBM Cognos Command Center 10.1 and 10.2: Unpack the content of the
ibm-java-jre-60-win-i386.zip file to <INSTALLDIR>\Common\java
7. For IBM Cognos Command Center 10.2.1: Unpack the content of the
ibm-java-jre-60-win-i386.zip file to <INSTALLDIR>\Common\java.6.0.16.0
8. For IBM Cognos Command Center 10.2.2: Unpack the content of the
ibm-java-jre-60-win-i386.zip file to <INSTALLDIR>\Common\java.6.0.16
9. Start the CccAgent, CccQueue and CccServer Microsoft Windows services.
10.Validate the installation by testing the connectivity to the agent using the
CCC Client.
For Microsoft Windows servers where the Server or Web Client component is
installed apply these additional steps.
1. Follow the instructions described in the Microsoft Security Bulletin MS15-055
titled "Vulnerability in Schannel Could Allow Information Disclosure
(3061518)".
(https://technet.microsoft.com/en-us/library/security/ms15-055.aspx)
For IBM Cognos Command Center with above fix applied: Before upgrading your
installation to 10.2.2 please revert to the original \java\ or \java.6.0.16.0\
directory:
1. Stop the CccServer, CccQueue and CccAgent Windows services.
2. Rename the <INSTALLDIR>\Common\java (or \java.6.0.16.0) directory to
<INSTALLDIR>\Common\java.cve (or \java.6.0.16.0.cve)
3. Rename the <INSTALLDIR>\Common\java.orig (or java.6.0.16.0.orig) directory to
<INSTALLDIR>\Common\java (or java.6.0.16.0).
4. Proceed to upgrade your Cognos Command Center installation to a newer version.
5. After upgrade to newer version is done, please reapply "Vulnerability in
Diffie-Hellman ciphers affects IBM Cognos Command Center (CVE-2015-4000)" fix
starting Step 1.
You should verify applying this configuration change does not cause any
compatibility issues. If you change the default setting after applying the
fix, you will expose yourself to the attack described above. IBM recommends
that you review your entire environment to identify other areas where you have
enabled the Diffie-Hellman key-exchange protocol used in TLS and take
appropriate mitigation and remediation actions.
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
Reported to IBM by The WeakDH team at https://weakdh.org
Change History
26 June 2015 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.
- ----------------------------------------------------------------------------
Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects IBM Cognos
Controller (CVE-2015-4000)
Document information
More support for:
Cognos Controller
Software version:
8.5, 8.5.1, 10.1, 10.1.1, 10.2.0, 10.2.1
Operating system(s):
Windows
Reference #:
1960454
Modified date:
2015-06-26
Security Bulletin
Summary
The Logjam Attack on TLS connections using the Diffie-Hellman (DH) key
exchange protocol affects IBM Cognos Controller
Vulnerability Details
CVEID: CVE-2015-4000
DESCRIPTION: The TLS protocol could allow a remote attacker to obtain
sensitive information, caused by the failure to properly convey a DHE_EXPORT
ciphersuite choice. An attacker could exploit this vulnerability using
man-in-the-middle techniques to force a downgrade to 512-bit export-grade
cipher. Successful exploitation could allow an attacker to recover the session
key as well as modify the contents of the traffic. This vulnerability is
commonly referred to as "Logjam".
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/103294 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Cognos Controller 10.2.1
IBM Cognos Controller 10.2
IBM Cognos Controller 10.1.1
IBM Cognos Controller 10.1
IBM Cognos Controller 8.5.1
IBM Cognos Controller 8.5
Remediation/Fixes
None
Workarounds and Mitigations
The DH cipher suites must be disabled using Cognos Configuration by performing
the following actions:
1) Start Cognos Configuration.
2) Navigate to Security/Cryptography/Cognos
3) Open the supported cipher suites selection dialog.
4) Select all cipher suites that have DH in the the name and remove them from
the Current Values List. Select OK to save the new list.
5) Save and restart your service using Cognos Configuration.
You should verify applying this configuration change does not cause any
compatibility issues. Not disabling the DH stream cipher will expose yourself
to the attack described above. IBM recommends that you review your entire
environment to identify other areas where you have enabled the DH stream
cipher and take appropriate mitigation and remediation actions.
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
Reported to IBM by The WeakDH team at https://weakdh.org
Change History
Original version published: June 26, 2015
*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--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
http://www.auscert.org.au/render.html?cid=1980
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
iQIVAwUBVZC79X6ZAP0PgtI9AQLuDA//f/UWvEmj2ExyINovn+RURLZrgkbQvLmg
QXMktsg0i1r/Ds2I+tbFGPGdkLxBbCb5JYLmx7oL6fvOcdNpmp3tMG+FvNQGNDc5
Y2rGUOVUYbAh0PLa5tHv0QeXxGt02BY20wOL+cU5WOpCg08Ca86EftNgh2k4lqwH
/0QgqLpZj2zro/s6O8yhXXRLLZnoCtpVbp+tsp0so0szWkQ4OWRC2vIG2wMVmahV
pnuLRz0GHpM4gW5Gbj9n6md4a/g+y1ZweuietQIomMfDsTbgK9IbFz08qLhgJ2+3
IVWd2qNInEvkzTP30LooELGdpYs5Z13VtMDgz0+QNcIlt9XqPxgtikgQ/rw7fB6+
pXEecpf+Or24uTMdUZ/ioUhttPDLDZPy8rrkrh2WWHXiPH66ULwereNy2T0+Vf37
D/z361mX2OrvCfj/Uxidfjia/tthVmq7EuzEeOh3bDbb3QLHKE/WWtLp7RGQX0LB
lYK+U4anr/dTuSftti0cOxgIev8xIn4ek472VY+4ak9XsBOCykyqSL3ZgRBYk+Zy
cMUXptzs/88CL4bbO+ZhL+M4esvQ7plfXPhTXck3vBjFSglG2A0OJCCTwdcBPEcn
It/2E22eWSjeTdY05xwTfCtiTSxoLnMLL33I2ae3He89J5aud7F2OShPC3HyAxf9
xmAr/xy8Z6c=
=FLG8
-----END PGP SIGNATURE-----