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ESB-2016.0407 - [Win][Linux][AIX] IBM InfoSphere Discovery: Access privileged data - Remote/unauthenticated

Date: 18 February 2016
References: ESB-2016.0046  ESB-2016.0047  ESB-2016.0049  ESB-2016.0055  ASB-2016.0004  ESB-2016.0383  ESB-2016.0386  ESB-2016.0398  ESB-2016.0401  ESB-2016.0409  
ESB-2016.0410  ESB-2016.0411  

Click here for printable version
Click here for PGP verifiable version
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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0407
       Security Bulletin: Vulnerability in IBM Java SDK affects IBM
                   InfoSphere Discovery (CVE-2015-7575)
                             18 February 2016

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM InfoSphere Discovery
Publisher:         IBM
Operating System:  AIX
                   Linux variants
                   Windows
Impact/Access:     Access Privileged Data         -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-7575  

Reference:         ASB-2016.0004
                   ESB-2016.0401
                   ESB-2016.0398
                   ESB-2016.0386
                   ESB-2016.0383
                   ESB-2016.0055
                   ESB-2016.0049
                   ESB-2016.0047
                   ESB-2016.0046

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21976047

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: Vulnerability in IBM Java SDK affects IBM InfoSphere
Discovery (CVE-2015-7575)

Security Bulletin

Document information

More support for:

InfoSphere Discovery

Software version:

4.1.1, 4.5, 4.6

Operating system(s):

AIX, Linux, Windows

Reference #:

1976047

Modified date:

2016-02-16

Summary

There is a vulnerability in IBM SDK Java Technology Edition, Version 6 that
is used by IBM InfoSphere Discovery. This vulnerability, commonly referred to
as SLOTH, was disclosed as part of the IBM Java SDK updates in January 2016.

Vulnerability Details

CVEID:

CVE-2015-7575

DESCRIPTION:

The TLS protocol could allow weaker than expected security caused by a
collision attack when using the MD5 hash function for signing a
ServerKeyExchange message during a TLS handshake. An attacker could exploit
this vulnerability using man-in-the-middle techniques to impersonate a TLS
server and obtain credentials. This vulnerability is commonly referred to as
SLOTH.

CVSS Base Score: 7.1

CVSS Temporal Score: See

https://exchange.xforce.ibmcloud.com/vulnerabilities/109415

for the current score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/UI:U/C:H/I:L/A:N)

Affected Products and Versions

IBM InfoSphere Discovery, IBM InfoSphere Discovery for Information
Integration, and IBM InfoSphere Discovery for zOS, versions 4.1.1 and 4.5 on
Windows, and version 4.6 running on all platforms

Remediation/Fixes



Product                            VRMF    APAR     Remediation/First Fix
All InfoSphere Discovery products  4.6     IT13447  --Apply IT13447
All InfoSphere Discovery products  4.5     IT13447  --Upgrade to Discovery 4.6.2.2
                                                    --Apply IT13447
All InfoSphere Discovery products  4.1.1   IT13447  --Upgrade to Discovery 4.6.2.2
                                                    --Apply IT13447

Workarounds and Mitigations

For CVE-2015-7575:

Users of Java 7 and later can address the issue by updating the
/jre/lib/security/java.security file as follows (both steps are required):

 Add MD5 to the jdk.certpath.disabledAlgorithms property - e.g.
jdk.certpath.disabledAlgorithms=MD2, RSA keySize < 1024, MD5

 Add MD5withRSA to the jdk.tls.disabledAlgorithms property - e.g.
jdk.tls.disabledAlgorithms=SSLv3, RC4, DH keySize < 768, MD5withRSA

Java 6 requires code changes in the JSSE component in addition to the
java.security file modifications, so upgrading the JDK is the only solution.

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References

Complete CVSS v3 Guide


On-line Calculator v3

IBM Java SDK Security Bulletin

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Acknowledgement

CVE-2015-7575 was reported to IBM by Karthikeyan Bhargavan at INRIA in Paris,
France

Change History

16 February 2016: 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.




Segment                 Product               Component    Platform             Version          Edition
Information Management  InfoSphere Discovery               Windows, AIX, Linux  4.6, 4.5, 4.1.1

- --------------------------END INCLUDED TEXT--------------------

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