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

Security Bulletin


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 https://exchange.xforce.ibmcloud.com/vulnerabilities/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).

Get Notified about Future Security Bulletins

References

Complete CVSS v2 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.

Related information

A Japanese translation is available

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: 01 May 2014


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