23 February 2017
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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== 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 =========================================================================== 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 - --------------------------BEGIN INCLUDED TEXT-------------------- 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 220.127.116.11 and previous levels of maintenance Remediation/Fixes IBM WebSphere MQ V8.0 Apply 18.104.22.168 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 Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. 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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. 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