Date: 12 June 2014
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AUSCERT External Security Bulletin Redistribution
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
Operating System: z/OS
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Denial of Service -- Existing Account
CVE Names: CVE-2014-3042
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Security Bulletin: Apply CICS TS PTFs to avoid storage overlays when using CEMT
More support for:
CICS Transaction Server
3.1, 3.2, 4.1, 4.2, 5.1
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).
CVE ID: CVE-2014-3042
CICS Transaction Server for z/OS security problem caused by use of incorrect
3270 data stream.
CVSS Base Score: 4.9
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/93338 for the
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
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
Workarounds and Mitigations
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.
CICS/TS CICS TS CICS Transaction Server
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