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Security Bulletin: A security vulnerability has been identified in IBM WebSphere Application Server shipped with IBM Rational ClearCase (CVE-2015-0138)

Created by John T Kohl on
Published URL:
https://www.ibm.com/support/pages/node/257295
257295

Security Bulletin


Summary

The “FREAK: Factoring Attack on RSA-EXPORT keys" TLS/SSL client and server vulnerability affects IBM WebSphere Application Server Versions 6.1, 7, 8, 8.5, and 8.5.5 that are used by IBM Rational ClearCase.

Vulnerability Details

Please consult the Security Bulletin: Vulnerability with RSA Export Keys may affect IBM WebSphere Application Server (CVE-2015-0138) for vulnerability details and information about fixes.

CVEID: CVE-2015-0138
DESCRIPTION: A vulnerability in various IBM SSL/TLS implementations could allow a remote attacker to downgrade the security of certain SSL/TLS connections. An IBM SSL/TLS client implementation could accept the use of an RSA temporary key in a non-export RSA key exchange ciphersuite. This could allow a remote attacker using man-in-the-middle techniques to facilitate brute-force decryption of TLS/SSL traffic between vulnerable clients and servers.

This vulnerability is also known as the FREAK attack.

CVSS Base Score: 4.3
CVSS Temporal Score: See http://exchange.xforce.ibmcloud.com/#/vulnerabilities/100691 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)

Affected Products and Versions

IBM Rational ClearCase, CCRC WAN server/CM Server component.

Versions 8.0.0.x, 8.0.1.x:


    This vulnerability only applies to the CCRC WAN server component, not to other parts of IBM Rational ClearCase. In addition, this vulnerability only applies if one of these conditions apply:

      (a) You have installed CCRC WAN server into an existing profile, and that profile supports a non-default set of ciphers

      (b) You modified the set of supported ciphers in the WAS profile that was created during installation of ClearCase

Versions 7.1.x.x:

    This vulnerability only applies to the CM server component, not to other parts of IBM Rational ClearCase.

    In addition, this vulnerability only applies if you modified the ClearCase WAS profile by changing its list of supported ciphers.

Note: other components of ClearCase are subject to the "FREAK" attack, as disclosed in the following security bulletins:
Security Bulletin: Vulnerabilities in GSKit affect IBM Rational ClearCase (CVE-2015-0138)
Security Bulletin: Vulnerabilities in OpenSSL affect Rational ClearCase (CVE-2014-3570, CVE-2014-3572, CVE-2015-0204)
Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect IBM Rational ClearCase (CVE-2015-0138, CVE-2014-6593, CVE-2015-0383, CVE-2015-0410)

Remediation/Fixes

Review the security bulletin referenced above and apply the relevant fixes to your WAS installation and WAS profiles used for ClearCase.

Affected Versions
Applying the fix
7.1.0.x, 7.1.1.x, and 7.1.2.xDocument 1390803 explains how to update WebSphere Application Server for ClearCase CM Servers at release 7.1.x. Consult those instructions when applying the fix.
8.0.0.x
8.0.1.x		Apply the appropriate WebSphere Application Server fix directly to your CCRC WAN server host. No ClearCase-specific steps are necessary.

You should verify applying this fix does not cause any compatibility issues.

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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

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

* 2 April 2015: Original copy published.
* 17 April 2015: updated to cross-reference related fixes.

*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:
10 July 2018

UID

swg21698831

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