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ESB-2014.0673 - [Linux][HP-UX][Solaris][AIX] IBM WebSphere MQ: Denial of service - Remote/unauthenticated

Date: 07 May 2014

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

                               ESB-2014.0673
         Security Bulletin: IBM WebSphere MQ - Potential denial of
            service when using the TCP listener (CVE-2014-0911)
                                7 May 2014

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

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

Product:           IBM WebSphere MQ
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   IBM i
                   Linux variants
                   Solaris
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-0911  

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21670374

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

Security Bulletin: IBM WebSphere MQ - Potential denial of service when
using the TCP listener (CVE-2014-0911)

Security Bulletin

Document information

More support for:
WebSphere MQ
Channels LU62 / TCP

Software version:
7.1, 7.1.0.1, 7.1.0.2, 7.1.0.3, 7.1.0.4, 7.5, 7.5.0.1, 7.5.0.2, 7.5.0.3

Operating system(s):
AIX, HP-UX, IBM i, Linux, Solaris

Software edition:
All Editions

Reference #:
1670374

Modified date:
2014-05-01

Summary

A denial of service vulnerability exists and could affect customers using
the TCP listener (inetd) on UNIX and IBM i platforms. This vulnerability
does not affect customers using the MQ listener.

Vulnerability Details

CVE ID: CVE-2014-0911
DESCRIPTION:
The TCP/IP listener (inetd) can be used with WebSphere MQ on UNIX and IBM i
systems. A denial of service vulnerability exists and could be exploited by
a remotely connected user to either create FDCs which could fill the file
system, or cause the inetd process to enter an infinite loop consuming all
CPU resources. This vulnerability does not affect customers using the MQ
listener (runmqlsr).


CVSS:
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/91876 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:N/A:P)

Affected Products and Versions

WebSphere MQ 7.1.x (UNIX and IBM i)

WebSphere MQ 7.5.x (UNIX only)

Remediation/Fixes

The recommended solution is to apply the fix for each named product as
soon as practical. Please see below for information on the fixes available.

WebSphere MQ 7.1.x
Apply fix pack 7.1.0.5 when available, in the meantime apply fix pack
7.1.0.4 and the interim fix for IV55886

WebSphere MQ 7.5.x
Apply fix pack 7.5.0.4 when available, in the meantime apply fix pack
7.5.0.3 and the interim fix for IV55886
Workarounds and Mitigations

Change to using the MQ listener (runmqlsr) instead of the TCP listener
(inetd).

References

Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

1 May 2014: Original Copy 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.

- --------------------------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
Facsimile:      (07) 3365 7031
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