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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.0492 Security Bulletin: Mutiple vulnerabilities in zlib affect IBM ILOG CPLEX Optimization Studio 23 February 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM ILOG CPLEX Optimization Studio Publisher: IBM Operating System: AIX HP-UX Linux variants OS X Solaris Windows Impact/Access: Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2016-9843 CVE-2016-9842 CVE-2016-9841 CVE-2016-9840 Original Bulletin: http://www.ibm.com/support/docview.wss?uid=swg21997946 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Mutiple vulnerabilities in zlib affect IBM ILOG CPLEX Optimization Studio Security Bulletin Document information More support for: IBM ILOG CPLEX Optimization Studio Software version: 12.2, 12.2.0.1, 12.3, 12.4, 12.4.0.1, 12.5, 12.5.0.1, 12.5.1, 12.6, 12.6.0.1, 12.6.1, 12.6.2, 12.6.3, 12.7.0 Operating system(s): AIX, HP-UX, Linux, OS X, Solaris, Windows Software edition: All Editions Reference #: 1997946 Modified date: 22 February 2017 Summary The gz feature, provided by the open source zlib, is used to decompress files automatically. A denial of service may be caused by four potential vulnerabilities. Vulnerability Details CVEID: CVE-2016-9840 DESCRIPTION: zlib is vulnerable to a denial of service, caused by an out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service. CVSS Base Score: 3.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120508 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L) CVEID: CVE-2016-9841 DESCRIPTION: zlib is vulnerable to a denial of service, caused by an out-of-bounds pointer arithmetic in inftrees.c. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service. CVSS Base Score: 3.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120509 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L) CVEID: CVE-2016-9842 DESCRIPTION: zlib is vulnerable to a denial of service, caused by an undefined left shift of negative number. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service. CVSS Base Score: 3.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120510 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L) CVEID: CVE-2016-9843 DESCRIPTION: zlib is vulnerable to a denial of service, caused by a big-endian out-of-bounds pointer. By persuading a victim to open a specially crafted document, a remote attacker could exploit this vulnerability to cause a denial of service. CVSS Base Score: 3.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/120511 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L) Affected Products and Versions IBM CPLEX Optimization Studio (COS) v12.7 and earlier IBM CPLEX Enterprise Server (CES) v12.7 and earlier Remediation/Fixes None Workarounds and Mitigations The workaround is to stop using the gz feature. You will need to decompress model files before trying to solve them with IBM ILOG CPLEX Optimization Studio. The gz feature is optional and not required for solving mathematical problems. Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. References Complete CVSS v3 Guide On-line Calculator v3 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 22 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. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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