ESB-2018.2127 - [Win][Linux][IBM i][HP-UX][Solaris][AIX] IBM MQ: Denial of service - Existing account 2018-07-23

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2127
     Security Bulletin: Malformed message headers could cause message
         transmission to be blocked through channels resulting in
                denial of service in IBM MQ(CVE-2018-1503)
                               23 July 2018

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

Product:           IBM MQ
Publisher:         IBM
Operating System:  Windows
                   Linux variants
                   HP-UX
                   Solaris
                   AIX
                   IBM i
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1503  

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22015617

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Security Bulletin: Malformed message headers could cause message transmission
to be blocked through channels resulting in denial of service in IBM
MQ(CVE-2018-1503)

Document information

More support for: WebSphere MQ

Software version: 7.5, 8.0, 9.0

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

Software edition: Edition Independent

Reference #: 2015617

Modified date: 20 July 2018

Security Bulletin

Summary

IBM MQ RCVR or CLUSRCVR type channels could go into retry status after
receiving messages containing invalid or malformed headers. This results
in blocking of further transmission of messages.

Vulnerability Details

CVEID:  CVE-2018-1503
DESCRIPTION:  IBM MQ could allow a remotely authenticated attacker to
send invalid or malformed headers that could cause messages to no longer
be transmitted via the affected channel.
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/141339 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

IBM WebSphere MQ v7.5.0.0 to 7.5.0.8

IBM WebSphere MQ v8.0.0.0 to 8.0.0.9

IBM MQ 9.0.0.0 to 9.0.0.3

Remediation/Fixes

IBM WebSphere MQ v7.5.0.0 to 7.5.0.8

Contact IBM Support to request an interim fix for IT24235

IBM WebSphere MQ v8.0.0.0 to 8.0.0.9

Apply fix pack 8.0.0.10

IBM MQ 9.0.0.0 to 9.0.0.3

Apply fix pack 9.0.0.4

Change History

18th July 2018 - Republish

*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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