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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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