IBM Support

Security Bulletin: Vulnerability in IBM Java Runtime affects IBM Tivoli Netcool Configuration Manager (ITNCM) (CVE-2015-7575)

Created by Eoin Jordan on
Published URL:
https://www.ibm.com/support/pages/node/714591
714591

Security Bulletin


Summary

There is a vulnerability in IBM® Runtime Environment Java™ Technology Edition, Version 6 Service Refresh 16 Fix Pack 5 and earlier releases that is used by ITNCM. 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

Product

 Java Version
ITNCM 6.3.0.6 IF003 and earlier. IBM® Runtime Environment Java™ Technology Edition, Version 6 Service Refresh 16 Fix Pack 5 and earlier releases
ITNCM 6.4.1.3 IF001 and earlier. IBM® Runtime Environment Java™ Technology Edition, Version 6 Service Refresh 16 Fix Pack 5 and earlier releases
ITNCM 6.4.2.0. IBM® Runtime Environment Java™ Technology Edition, Version 7, please see Workarounds and Mitigations.

Remediation/Fixes

Product

 VRMF Remediation/First Fix
ITNCM 6.4.1.3 6.4.1.3-TIV-ITNCM-IF002
http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FTivoli%2FTivoli+Netcool+Configuration+Manager&fixids=6.4.1.3-TIV-ITNCM-IF002&source=SAR
ITNCM 6.3.0.6 6.3.0.6-TIV-ITNCM-IF005 http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FTivoli%2FTivoli+Netcool+Configuration+Manager&fixids=6.3.0.6-TIV-ITNCM-IF005&source=SAR

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.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

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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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

[{"Product":{"code":"SS7UH9","label":"Tivoli Netcool Configuration Manager"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"Tivoli Netcool Configuration Manager","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF002","label":"AIX"}],"Version":"6.3.0;6.4.1","Edition":"All Editions","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
20 December 2019

UID

swg21976006

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