-----BEGIN PGP SIGNED MESSAGE-----
AUSCERT External Security Bulletin Redistribution
Security Bulletin: POODLE vulnerability in SSLv3 affects IBM
CICS Transaction Gateway (CVE-2014-3566)
28 October 2014
AusCERT Security Bulletin Summary
Product: IBM CICS Transaction Gateway
Operating System: AIX
Impact/Access: Access Confidential Data -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
CVE Names: CVE-2014-3566
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: POODLE vulnerability in SSLv3 affects IBM CICS Transaction
More support for:
CICS Transaction Gateway
8.0, 8.1, 9.0, 9.1
AIX, Linux, Solaris, Windows
SSLv3 contains a vulnerability that has been referred to as the Padding Oracle
On Downgraded Legacy Encryption (POODLE) attack. Supported versions of CICS
Transaction Gateway for Mutliplatforms and CICS Transaction Gateway for
Desktop Edition are affected by POODLE.
CVE ID: CVE-2014-3566
DESCRIPTION: IBM CICS Transaction Gateway could allow a remote attacker to
obtain sensitive information, caused by a design error when using the SSLv3
protocol. A remote user with the ability to conduct a man-in-the-middle attack
could exploit this vulnerability by using a POODLE (Padding Oracle On
Downgraded Legacy Encryption) attack to decrypt SSL sessions and access the
plaintext of encrypted connections.
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/97013 for the
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Back level CICS TG provided JARs and resource adapters are allowed to connect
to CICS TG using SSLv3. All supported versions of the CICS TG provided JARs
and resource adapters connect to CICS TG using TLS.
At CICS TG V9.1 the https listener will allow SSLv3 connections. This will be
resolved by a CICS TG APAR. This document will be updated with details when
the fix is available.
Affected Products and Versions
Supported versions of CICS TG for Mutliplatforms and CICS TG Desktop Edition
Workarounds and Mitigations
Upgrade unsupported back-level CICS TG client applications to use supported
versions of the CICS TG provided JARs or resource adapters.
Starting in CICS TG V9.0, TLSv1.2 connections can be required by specifying
SP800-131A strict compliance using Java system property:
Specifying SP800-131A transition compliance requires TLSv1.0 connections:
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
Complete CVSS Guide
On-line Calculator V2
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
*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.
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.
CICSTG CTG CICS TG
- --------------------------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 firstname.lastname@example.org
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:
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: email@example.com
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-----
-----END PGP SIGNATURE-----