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AUSCERT External Security Bulletin Redistribution
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
Operating System: AIX
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
CVE Names: CVE-2015-7575
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Security Bulletin: Vulnerability in IBM Java SDK affects IBM InfoSphere
More support for:
4.1.1, 4.5, 4.6
AIX, Linux, Windows
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.
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
CVSS Base Score: 7.1
CVSS Temporal Score: See
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
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 126.96.36.199
All InfoSphere Discovery products 4.1.1 IT13447 --Upgrade to Discovery 188.8.131.52
Workarounds and Mitigations
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.
Get Notified about Future Security Bulletins
to be notified of important product support alerts like this.
Complete CVSS v3 Guide
On-line Calculator v3
IBM Java SDK Security Bulletin
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
CVE-2015-7575 was reported to IBM by Karthikeyan Bhargavan at INRIA in Paris,
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.
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
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