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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
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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
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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.
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