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ESB-2014.0963 - IBM CICS Transaction Server: Execute arbitrary code/commands - Existing account

Date: 12 June 2014

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.0963
          Security Bulletin: Apply CICS TS PTFs to avoid storage
                 overlays when using CEMT (CVE-2014-3042)
                               12 June 2014

===========================================================================

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

Product:           IBM CICS Transaction Server
Publisher:         IBM
Operating System:  z/OS
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account
                   Denial of Service               -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-3042  

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21675195

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: Apply CICS TS PTFs to avoid storage overlays when using CEMT
(CVE-2014-3042)

Security Bulletin

Document information
More support for:
CICS Transaction Server

Software version:
3.1, 3.2, 4.1, 4.2, 5.1

Operating system(s):
z/OS

Reference #:
1675195

Modified date:
2014-06-06

Summary

Incorrect 3270 data stream received from a 3270 emulator can cause transaction
CEMT to overlay storage in all supported versions of CICS Transaction Server 
for z/OS (CICS TS).

Vulnerability Details

CVE ID: CVE-2014-3042

DESCRIPTION:
CICS Transaction Server for z/OS security problem caused by use of incorrect 
3270 data stream.

CVSS:
CVSS Base Score: 4.9
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/93338 for the 
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:S/C:P/I:P/A:N)

Affected Products and Versions

CICS Transaction Server for z/OS 3.1
CICS Transaction Server for z/OS 3.2
CICS Transaction Server for z/OS 4.1
CICS Transaction Server for z/OS 4.2
CICS Transaction Server for z/OS 5.1

Remediation/Fixes

Apply PTF UI18009 for CICS TS V3.1 security integrity APAR PI16710.
Apply PTF UI18010 for CICS TS V3.2 security integrity APAR PI16710.
Apply PTF UI18048 for CICS TS V4.1 security integrity APAR PI16726.
Apply PTF UI18049 for CICS TS V4.2 security integrity APAR PI16726.
Apply PTF UI18050 for CICS TS V5.1 security integrity APAR PI16727.

Security integrity APARs are not on the web. See Ordering CICS products and 
maintenance if you need additional information about downloading or ordering 
the PTFs.

Workarounds and Mitigations

None

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

*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.

Product Alias/Synonym

CICS/TS CICS TS CICS Transaction Server

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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