Security Bulletin
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/S: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 5.2.0 5.2.1 | PJ43917 PJ43915 PJ43915 | 5.1.0.0-P8CSS-IF015 - 2/23/2016 5.2.0.4-P8CPE-IF003 - 2/23/2016 5.2.1.3-P8CPE-IF001 - 2/23/2016 |
| IBM Content Foundation | 5.2.0 5.2.1 | PJ43915 PJ43915 | 5.2.0.4-P8CPE-IF003 - 2/23/2016 5.2.1.3-P8CPE-IF001 - 2/23/2016 |
| FileNet Business Process Manager | 4.5.1 5.0.0 | PJ43908 PJ43914 | 4.5.1.4-P8PE-IF010 - 2/23/2016 5.0.0.9-P8PE-IF003 - 2/23/2016 |
| FileNet eProcess | 5.2.0 | PJ43916 | eProcess-5.2.0-001.008 - 2/23/2016 |
In the above table, the APAR links will provide more information about the fix.
The links in the Remediation column will take you to the location within IBM Fix Central where you can download the particular fix you need.
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
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
Acknowledgement
CVE-2015-7575 was reported to IBM by Karthikeyan Bhargavan at INRIA in Paris, France
Change History
23 Februrary 2016: Original Version Published
15 March 2016: Corrected CVE-2015-7575 CSS Vector
*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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
17 June 2018
UID
swg21975823