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AUSCERT External Security Bulletin Redistribution
ESB-2017.0785
Security Bulletin: Multiple vulnerabilities in IBM Java
Runtime affect IBM MQ and IBM MQ Appliance
23 March 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM MQ
IBM MQ Appliance
Publisher: IBM
Operating System: Linux variants
Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Unauthorised Access -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2017-3261 CVE-2016-5549 CVE-2016-5548
CVE-2016-5547 CVE-2016-5546 CVE-2016-2183
Reference: ASB-2017.0005
ASB-2017.0001
ASB-2016.0095
ESB-2017.0650
ESB-2017.0649
ESB-2017.0638
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg22000304
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Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect IBM MQ
and IBM MQ Appliance
Security Bulletin
Document information
More support for:
WebSphere MQ
Java
Software version:
9.0.1, 9.0.2
Operating system(s):
Linux, Windows
Software edition:
All Editions
Reference #:
2000304
Modified date:
22 March 2017
Summary
There are multiple vulnerabilities in IBM Runtime Environment Java Version 8
used by IBM MQ and the IBM MQ Appliance. These issues were disclosed as part
of the IBM Java SDK updates in Jan 2017.
Please ensure that you read the remediation/fixes section carefully before
applying fixes.
Vulnerability Details
If you run your own Java code using the IBM Java Runtime delivered with this
product, you should evaluate your code to determine whether the complete list
of vulnerabilities are applicable to your code. For a complete list of
vulnerabilities please refer to the link for IBM Java SDK Security Bulletin"
located in the References section for more information.
CVEID:
CVE-2016-5546
DESCRIPTION:
An unspecified vulnerability in Oracle Java SE Java SE Embedded and Jrockit
related to the Libraries component has no confidentiality impact, high
integrity impact, and no availability impact.
CVSS Base Score: 7.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/120869
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
CVEID:
CVE-2016-5548
DESCRIPTION:
An unspecified vulnerability in Oracle Java SE and Java SE Embedded related
to the Libraries component could allow a remote attacker to obtain sensitive
information resulting in a high confidentiality impact using unknown attack
vectors.
CVSS Base Score: 6.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/120864
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
CVEID:
CVE-2016-5549
DESCRIPTION:
An unspecified vulnerability in Oracle Java SE and Java SE Embedded related
to the Libraries component could allow a remote attacker to obtain sensitive
information resulting in a high confidentiality impact using unknown attack
vectors.
CVSS Base Score: 6.5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/120863
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
CVEID:
CVE-2016-5547
DESCRIPTION:
An unspecified vulnerability in Oracle Java SE Java SE Embedded and Jrockit
related to the Libraries component could allow a remote attacker to cause a
denial of service resulting in a low availability impact using unknown attack
vectors.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/120871
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
CVEID:
CVE-2017-3261
DESCRIPTION:
An unspecified vulnerability in Oracle Java SE and Java SE Embedded related
to the Networking component could allow a remote attacker to obtain sensitive
information resulting in a low confidentiality impact using unknown attack
vectors.
CVSS Base Score: 4.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/120866
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
CVEID:
CVE-2016-2183
DESCRIPTION:
OpenSSL could allow a remote attacker to obtain sensitive information, caused
by an error in the DES/3DES cipher, used as a part of the SSL/TLS protocol.
By capturing large amounts of encrypted traffic between the SSL/TLS server
and the client, a remote attacker able to conduct a man-in-the-middle attack
could exploit this vulnerability to recover the plaintext data and obtain
sensitive information. This vulnerability is known as the SWEET32 Birthday
attack.
CVSS Base Score: 3.7
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/116337
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
IBM MQ
IBM MQ 9.0.1 and 9.0.2
IBM MQ Appliance
IBM MQ MQ 9.0.1 and 9.0.2
IBM MQ Managed File Transfer (redistributable)
IBM MQ MQ 9.0.1 and 9.0.2
Remediation/Fixes
Upgrade to IBM MQ 9.0.2 and then apply ifix IT19456.
IBM MQ & MFT Redistributable 9.0.2 - IT19456
IBM MQ Appliance 9.0.2 - IT19456
Note that keystores that contain certificates with leading zeroes encoded in
the certificate serial number might be broken by applying this interim fix.
See the following technote for further details on how to identify affected
keystores and certificates.
Setting system property "com.ibm.security.EnforceStrictDER" to false after
installing this ifix disables some of the stricter encoding checks introduced
by the fix for CVE-2016-5546 and allow the keystores to be used as
previously.
MQ Java/JMS Applications
Applications can provide this setting through command line parameters to the
JVM;
java -Dcom.ibm.security.EnforceStrictDER=false MQPubSubApiSample
MQ Explorer
MQ Explorer can provide this setting through a command line parameter;
MQExplorer.exe -vmargs -Dcom.ibm.security.EnforceStrictDER=false
IBM Key Management
IBM Key Management can provide this setting through a command line parameter;
strmqikm.exe -Dcom.ibm.security.EnforceStrictDER=false
Managed File Transfer
Refer to the following
Knowledge Center topic
on defining system properties for Managed File Transfer agents.
MQ Telemetry (MQXR)
Refer to the following Knowledge Center topic on defining system properties
for MQ Telemetry service.
AMQP Service
If required, the AMQP service can be altered to use this system property by
using the following MQSC command;
ALTER SERVICE(SYSTEM.AMQP.SERVICE) STARTARG('start -m +QMNAME+ -d
"+MQ_Q_MGR_DATA_PATH+/." -g "+MQ_DATA_PATH+/."
- -J "-Dcom.ibm.security.EnforceStrictDER=false"')
See the Related Information section link for further details on identifying
affected keystores and certificates.
Important note
IBM strongly suggests that all System z customers be subscribed to the System
z Security Portal to receive the latest critical System z security and
integrity service. If you are not subscribed, see the instructions on the
System z Security web site. Security and integrity APARs and associated fixes
will be posted to this portal. IBM suggests reviewing the CVSS scores and
applying all security or integrity fixes as soon as possible to minimize any
potential risk.
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
IBM Java SDK Security Bulletin
IBM MQ Java component fails with java.io.IOException: Invalid encoding:
redundant leading 0s
Change History
22 March 2017: Original version 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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