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AUSCERT External Security Bulletin Redistribution
ESB-2015.1127
A vulnerability has been identified in IBM Sterling Connect:Direct
24 April 2015
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Sterling Direct:Connect
Publisher: IBM
Operating System: Windows
HP NonStop
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-2808
Reference: ESB-2015.0962
ESB-2015.0961
ESB-2015.0960
ESB-2015.0958
ESB-2015.0956
ESB-2015.0955
ESB-2015.0954
ESB-2015.0953
ESB-2015.0950.2
ESB-2015.0949.2
ESB-2015.0948.2
ESB-2015.0947.2
ESB-2015.0946.2
ESB-2015.0944.2
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21882577
http://www-01.ibm.com/support/docview.wss?uid=swg21883400
Comment: This bulletin contains two (2) IBM security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Sterling
Connect:Direct for Microsoft Windows (CVE-2015-2808)
Security Bulletin
Document information
More support for:
Sterling Connect:Direct for Microsoft Windows
Software version:
4.5, 4.5.01, 4.6, 4.7
Operating system(s):
Windows
Reference #:
1882577
Modified date:
2015-04-23
Summary
The RC4 "Bar Mitzvah Attack" for SSL/TLS affects IBM Sterling Connect:Direct
for Microsoft Windows.
Vulnerability Details
CVEID: CVE-2015-2808
DESCRIPTION: The RC4 algorithm, as used in the TLS protocol and SSL protocol,
could allow a remote attacker to obtain sensitive information. An attacker
could exploit this vulnerability to remotely expose account credentials
without requiring an active man-in-the-middle session. Successful exploitation
could allow an attacker to retrieve credit card data or other sensitive
information. This vulnerability is commonly referred to as "Bar Mitzvah
Attack".
CVSS Base Score: 5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/101851 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Sterling Connect:Direct for Microsoft Windows 4.7.0 and earlier.
Remediation/Fixes
IBM Sterling Connect:Direct for Microsoft Windows by default disables the RC4
stream cipher. If you enabled the RC4 stream cipher you are exposed to the RC4
Bar Mitzvah Attack for SSL/TLS. IBM recommends that you review your entire
environment to identify other areas where you have enabled the RC4 stream
cipher and take appropriate mitigation and remediation actions.
To disable RC4 stream ciphers, open the CD Secure+ Admin Tool and go through
the list of node entries. For each entry, go to its TLS/SSL Protocol > TLS/SSL
Options tab and remove any RC4 stream cipher from the list shown in the
Enabled box.
You should verify applying this configuration change does not cause any
compatibility issues.
Note that the remaining available ciphers are generally CBC ciphers. CBC
ciphers are vulnerable to CVE-2011-3389 (BEAST Attack). While the previous
recommendation to mitigate CVE-2011-3389 was to not use CBC ciphers, there is
now a fix available to mitigate CVE-2011-3389. Therefore IBM recommends to
apply the following fix in addition to disabling RC4 stream ciphers:
Product VRMF APAR Remediation/First Fix
IBM Sterling Connect:Direct for Microsoft Windows 4.5.00 IT08243 Apply 4.5.00 patch 056, available on IWM
IBM Sterling Connect:Direct for Microsoft Windows 4.5.01 IT08243 Apply 4.5.01 patch 022, available on IWM
IBM Sterling Connect:Direct for Microsoft Windows 4.6.0 IT08243 Apply 4.6.0.5_iFix010, available on Fix Central
IBM Sterling Connect:Direct for Microsoft Windows 4.7.0 IT08243 Apply 4.7.0.3_iFix005, available on Fix Central
For older unsupported versions IBM recommends upgrading to a fixed, supported
version 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 Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
23 April 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 RC4 stream cipher affects IBM Sterling
Connect:Direct for HP NonStop (CVE-2015-2808)
Security Bulletin
Document information
More support for:
Sterling Connect:Direct for HP NonStop
Software version:
3.5, 3.6
Operating system(s):
HP NonStop
Software edition:
All Editions
Reference #:
1883400
Modified date:
2015-04-23
Summary
The RC4 Bar Mitzvah Attack for SSL/TLS affects IBM Sterling Connect:Direct for
HP NonStop.
Vulnerability Details
CVEID: CVE-2015-2808
DESCRIPTION: The RC4 algorithm, as used in the TLS protocol and SSL protocol,
could allow a remote attacker to obtain sensitive information. An attacker
could exploit this vulnerability to remotely expose account credentials
without requiring an active man-in-the-middle session. Successful exploitation
could allow an attacker to retrieve credit card data or other sensitive
information. This vulnerability is commonly referred to as "Bar Mitzvah
Attack".
CVSS Base Score: 5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/101851 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Sterling Connect:Direct for HP NonStop 3.5.00
IBM Sterling Connect:Direct for HP NonStop 3.5.01
IBM Sterling Connect:Direct for HP NonStop 3.6.0
Remediation/Fixes
The recommended solution is to apply the fix as soon as practical. Please see
below for information about the available fixes.
VRMF APAR Remediation/First Fix
3.5.00 IT08228 Apply 3.5.00 maintenance dated April 23, 2015, available on IWM
3.5.01 IT08228 Apply 3.5.01 maintenance dated April 23, 2015, available on IWM
3.6.0 IT08228 Apply 3.6.0.1, iFix 021, available on Fix Central
You should verify that applying this configuration change does not cause any
compatibility issues.
Workarounds and Mitigations
Deselect RC4 ciphers if they are specified in the Secure+ configuration. To
avoid production outages when switching to another cipher, coordinate the
configuration change to an agreed cipher with the security administrator of
each remote node with which you use Secure+.
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 Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
23 April 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.
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