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ESB-2016.0383 - [Win][Linux][Solaris][AIX] IBM Content Manager Enterprise Edition: Access privileged data - Remote with user interaction

Date: 16 February 2016
References: ASB-2016.0004  ESB-2016.0407  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2016.0383
          Multiple vulnerabilities in IBM Java SDK affect Content
                        Manager Enterprise Edition
                             16 February 2016

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

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

Product:           IBM Content Manager Enterprise Edition
Publisher:         IBM
Operating System:  AIX
                   Linux variants
                   Solaris
                   Windows
Impact/Access:     Access Privileged Data         -- Remote with User Interaction
                   Provide Misleading Information -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2015-7575  

Reference:         ASB-2016.0004

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg21976742

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

Security Bulletin:  Multiple vulnerabilities in IBM Java SDK affect Content
Manager Enterprise Edition CVE-2015-7575

Security Bulletin

Document information

More support for:

Content Manager Enterprise Edition

Software version:

8.5

Operating system(s):

AIX, Linux, Solaris, Windows

Reference #:

1976742

Modified date:

2016-02-11

Summary

There are multiple vulnerabilities in IBM SDK Java Technology Edition,
Version 1.7 that is used by Content Manager Enterprise Edition. These issues
were disclosed as part of the IBM Java SDK updates in January 2016 and
includes the vulnerability commonly referred to as SLOTH.

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

Content Manager Enterprise Edition V8.5

Remediation/Fixes

Product                               VRMF  APAR    Remediation/First Fix
Content Manager Enterprise Edition     8.5  N/A     Contact L2 Support for Fix Number 009_850004tf

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 v2 Guide

On-line Calculator v2

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

*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--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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