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AUSCERT External Security Bulletin Redistribution
ESB-2014.2480
Security Bulletin: TLS padding vulnerability affects IBM
SPSS Modeler (CVE-2014-8730)
22 December 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM SPSS Modeler
Publisher: IBM
Operating System: AIX
HP-UX
IBM i
Linux variants
Solaris
Windows
Impact/Access: Access Privileged Data -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Mitigation
CVE Names: CVE-2014-8730
Reference: ESB-2014.2478
ESB-2014.2468
ESB-2014.2466
ESB-2014.2460
ESB-2014.2453
ESB-2014.2452
ESB-2014.2447
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21693285
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Security Bulletin: TLS padding vulnerability affects IBM SPSS Modeler
(CVE-2014-8730)
Document information
More support for:
SPSS Modeler
Software version:
16.0
Operating system(s):
AIX, HP-UX, IBM i, Linux, Solaris, Windows
Reference #:
1693285
Modified date:
2014-12-19
Security Bulletin
Summary
Summary Transport Layer Security (TLS) padding vulnerability via a POODLE
(Padding Oracle On Downgraded Legacy Encryption) like attack affects IBM SPSS
Modeler.
Vulnerability Details
CVE-ID: CVE-2014-8730
DESCRIPTION:
Product could allow a remote attacker to obtain sensitive information, caused
by the failure to check the contents of the padding bytes when using CBC
cipher suites of some TLS implementations. A remote user with the ability to
conduct a man-in-the-middle attack could exploit this vulnerability via a
POODLE (Padding Oracle On Downgraded Legacy Encryption) like attack to decrypt
sensitive information and calculate the plaintext of secure connections.
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/99216 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM SPSS Modeler 16.0
Remediation/Fixes
None
Workarounds and Mitigations
For Windows:
1. Add one system environment variable GSK_STRICTCHECK_CBCPADBYTES=GSK_TRUE
2. Reboot the machine.
For Linux/Unix:
1. Stop Modeler Server.
2. Edit modelersrv.sh to add following two lines,
GSK_STRICTCHECK_CBCPADBYTES=GSK_TRUE
export GSK_STRICTCHECK_CBCPADBYTES
to export the environment variable.
3. Start Modeler Server.
You should verify that applying this configuration change does not cause any
compatibility issues.
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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 Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Change History
19 December 2014: 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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