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AUSCERT External Security Bulletin Redistribution
ESB-2016.0471
Security Bulletin: Java specific SLOTH - Weak MD5 Signature Hash
24 February 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Case Foundation
Publisher: IBM
Operating System: AIX
HP-UX
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
ESB-2016.0467
ESB-2016.0466
ESB-2016.0055
ESB-2016.0049
ESB-2016.0047
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21975823
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Security Bulletin: Java specific SLOTH - Weak MD5 Signature Hash
Security Bulletin
Document information
More support for:
Case Foundation
Business Process Manager
Software version:
5.2, 5.2.1
Operating system(s):
AIX, HP-UX, Linux, Solaris, Windows
Reference #:
1975823
Modified date:
2016-02-23
Summary
There is vulnerability in IBM Runtime Environment Java Technology Edition,
Versions 6, 7, and 8, that are used by FileNet Content Manager, IBM Content
Foundation and FileNet BPM. These issues were disclosed as part of the IBM
Java SDK updates in January 2016 and include 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
FileNet Content Manager 5.1.0, 5.2.0, 5.2.1
IBM Content Foundation 5.2.0, 5.2.1
FileNet Business Process Manager 4.5.1, 5.0.0
FileNet eProcess 5.2.0
Remediation/Fixes
Install one of the fixes listed below to upgrade the Java JRE.
The fixes listed in the table below supply the proper Java JRE for the
various release levels of the affected products. Depending upon the product
and release level, these fixes will upgrade the Java JRE to one of:
IBM JRE, Java Technology Edition, Version 6 Service Refresh 16 Fix Pack 20
IBM JRE, Java Technology Edition, Version 7 Service Refresh 9 Fix Pack 30
IBM JRE, Java Technology Edition, Version 8 Service Refresh 2 Fix Pack 10
Product VRMF APAR Remediation/First Fix
FileNet Content Manager 5.1.0 PJ43917 5.1.0.0-P8CSS-IF015 - 2/23/2016
5.2.0 PJ43915 5.2.0.4-P8CPE-IF003 - 2/23/2016
5.2.1 PJ43915 5.2.1.3-P8CPE-IF001 - 2/23/2016
IBM Content Foundation 5.2.0 PJ43915 5.2.0.4-P8CPE-IF003 - 2/23/2016
5.2.1 PJ43915 5.2.1.3-P8CPE-IF001 - 2/23/2016
FileNet Business Process Manager 4.5.1 PJ43908 4.5.1.4-P8PE-IF010 - 2/23/2016
5.0.0 PJ43914 5.0.0.9-P8PE-IF003 - 2/23/2016
FileNet eProcess 5.2.0 PJ43916 eProcess-5.2.0-001.008 - 2/23/2016
Workarounds and Mitigations
The new JREs that are supplied by the above fixes resolve the CVE-2015-7575
(SLOTH) vulnerability.
Note that CSS 5.1 uses Java 6 and has issued a patch.
CSS 5.2.0 and CSS 5.2.1 use Java 8 and are not issuing a patch at this time
because the vulnerability can be eliminated as follows:
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
Note: If you install a Java fix pack, that will overwrite the above
java.security file changes.
Get Notified about Future Security Bulletins
Subscribe to
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to be notified of important product support alerts like this.
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 v2 Guide
On-line Calculator v2
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
23 Februrary 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
Enterprise Content Management FileNet Content Manager Content Search Services AIX, Linux, Solaris, Windows 5.2.1, 5.2.0, 5.1.0
Enterprise Content Management FileNet P8 Platform Process Engine Windows, AIX, HP-UX, Linux, Solaris 5.0, 4.5.1
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