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AUSCERT External Security Bulletin Redistribution
ESB-2017.0490
Security Bulletin: Vulnerabilities in OpenSSL affect IBM
WebSphere MQ (CVE-2016-2106, CVE-2016-2109)
23 February 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM WebSphere MQ
Publisher: IBM
Operating System: IBM i
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2016-2109 CVE-2016-2106
Reference: ASB-2016.0104
ASB-2016.0074
ESB-2017.0367
ESB-2016.2997
ESB-2016.2774
ESB-2016.2545
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg21998797
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Security Bulletin: Vulnerabilities in OpenSSL affect IBM WebSphere MQ
(CVE-2016-2106, CVE-2016-2109)
Security Bulletin
Document information
More support for: WebSphere MQ
SSL
Software version: 8.0
Operating system(s): IBM i
Software edition: All Editions
Reference #: 1998797
Modified date: 22 February 2017
Summary
OpenSSL vulnerabilities were disclosed on May 3, 2016 by the OpenSSL Project.
OpenSSL is used by IBM WebSphere MQ. IBM WebSphere MQ has addressed the
applicable CVEs.
Vulnerability Details
CVEID: CVE-2016-2106
DESCRIPTION: OpenSSL is vulnerable to a heap-based buffer overflow, caused by
improper bounds checking by the EVP_EncryptUpdate() function. By sending an
overly long argument, a remote attacker could overflow a buffer and execute
arbitrary code on the system or cause the application to crash.
CVSS Base Score: 5.6
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/112856 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:L/A:L)
CVEID: CVE-2016-2109
DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a memory
allocation error. By reading specially crafted ASN.1 data from a BIO using
functions such as d2i_CMS_bio(), an attacker could exploit this vulnerability
to consume all available resources and exhaust memory.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/112857 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)
Affected Products and Versions
IBM WebSphere MQ V8.0 - Advanced Message Security on IBM i only
IBM WebSphere MQ 8.0.0.5 and previous levels of maintenance
Remediation/Fixes
IBM WebSphere MQ V8.0
Apply 8.0.0.6 maintenance level
Note: A fix for CVE-2016-2108 was provided in OpenSSL versions 1.0.1o and
1.0.2c and was previously addressed by IBM WebSphere MQ.
Workarounds and Mitigations
None
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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
Change History
14 February 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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