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Security Bulletin: Vulnerability in Diffie-Hellman cipher affects Rational Insight (CVE-2015-4000)

Created by Cheng-Yee Lin on

Security Bulletin


Summary

The Logjam Attack on TLS connections using the Diffie-Hellman (DH) key exchange protocol affects Jazz Team Server and Cognos Business Intelligence (Cognos BI) shipped with Rational Insight.

Vulnerability Details

CVEID: CVE-2015-4000
DESCRIPTION: The TLS protocol could allow a remote attacker to obtain sensitive information, caused by the failure to properly convey a DHE_EXPORT ciphersuite choice. An attacker could exploit this vulnerability using man-in-the-middle techniques to force a downgrade to 512-bit export-grade cipher. Successful exploitation could allow an attacker to recover the session key as well as modify the contents of the traffic. This vulnerability is commonly referred to as "Logjam".

CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103294 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

Affected Products and Versions

Principal Product and Version(s)

Affected Supporting Product(s) and Version(s)
Rational Insight 1.1, 1.1.1, 1.1.1.1 and 1.1.1.2Cognos BI 10.1.1
Rational Insight 1.1.1.3Cognos BI 10.2.1
Rational Insight 1.1.1.4, 1.1.1.5 and 1.1.1.6Cognos BI 10.2.1 Fix pack 2
Jazz Team Server 5.0, 5.0.1 and 5.0.2
Rational Insight 1.1.1.7 Cognos BI 10.2.1 Fix pack 2
Jazz Team Server 6.0

Remediation/Fixes

Apply the recommended fixes to all affected versions of Rational Insight.

<Cognos - Done. JTS - TBD>

Rational Insight 1.1


Rational Insight 1.1.1, 1.1.1.1 and 1.1.1.2


Rational Insight 1.1.1.3


Rational Insight 1.1.1.4 and 1.1.1.5 and 1.1.1.6 and 1.1.1.7

  1. If the Data Collection Component or Jazz Reporting Serivce are used, perform this step first.
    Review the topics in Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects multiple IBM Rational products based on IBM Jazz technology (CVE-2015-4000) for addressing the listed vulnerabilities in their underlying Jazz Team Server.
  2. If the Cognos-based reporting server is used, also perform this step.
    Download the IBM Cognos Business Intelligence 10.2.1.1 Interim Fix 11 (Implemented by file 10.2.5008.512).
    Review technote 1679283: Installing Cognos Business Intelligence 10.2.1.x fix pack in Rational Reporting for Development Intelligence 2.0.x/5.0.x and Rational Insight 1.1.1.x for the detailed instructions for patch application.

Workarounds and Mitigations

Please consult the security bulletin Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects multiple IBM Rational products based on IBM Jazz technology (CVE-2015-4000)
(Jazz Team Server) and Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects IBM Cognos Business Intelligence (CVE-2015-4000) (Cognos BI) for vulnerability details and information about fixes.

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References

Complete CVSS v2 Guide
On-line Calculator v2

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

Reported to IBM by The WeakDH team at https://weakdh.org

*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.

Internal Use Only

PSIRT # 3328 Record # 56858

[{"Product":{"code":"SSRL5J","label":"Rational Insight"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Component":"General Information","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"1.1;1.1.1;1.1.1.1;1.1.1.2;1.1.1.3;1.1.1.4;1.1.1.5;1.1.1.6;1.1.1.7","Edition":"","Line of Business":{"code":"LOB45","label":"Automation"}}]

Document Information

Modified date:
17 June 2018

UID

swg21959583

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