Security Bulletin: Vulnerability in IBM WebSphere Application Server affects WebSphere Business Services Fabric (CVE-2015-0138)

Created by Jens Engelke on Fri, 03/20/2015 - 06:34

Security Bulletin

Summary

The “FREAK: Factoring Attack on RSA-EXPORT keys" TLS/SSL client and server vulnerability affects IBM WebSphere Application Server Full Profile that is used by WebSphere Business Services Fabric.

Vulnerability Details

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

WebSphere Business Services Fabric V7.0

For earlier unsupported versions of the above product IBM recommends upgrading to a fixed, supported version of the product.

Remediation/Fixes

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

Workarounds and Mitigations

None

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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

Acknowledgement

The vulnerability was reported to IBM by Karthikeyan Bhargavan of the PROSECCO team at INRIA

Change History

2015-03-27: 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

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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Tips

Security Bulletin: Vulnerability in IBM WebSphere Application Server affects WebSphere Business Services Fabric (CVE-2015-0138)