Security Bulletin: Vulnerability in IBM WebSphere Application Server affects IBM MQ Light (CVE-2015-0138)

Security Bulletin

Summary

The “FREAK: Factoring Attack on RSA-EXPORT keys" TLS/SSL client and server vulnerability affects IBM WebSphere Application Server Liberty Profile Version 8.5.5 that is used by IBM MQ Light.

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

The vulnerability affects users of IBM MQ Light V1.0 and V1.0.0.1 on all platforms.

Remediation/Fixes

Download and install the appropriate MQ Light Server for your platform as shown below:

Platform	License Type	APAR	Remediation/Fix
Windows	Developer	IT08000	http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%2FWebSphere&product=ibm/WebSphere/IBM+MQ+Light&release=All&platform=All&function=fixId&fixids=IBM-MQ-Light-Windows-x64-developer-L150408-IT08000&includeSupersedes=0
Windows	Production	IT08000	http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%2FWebSphere&product=ibm/WebSphere/IBM+MQ+Light&release=All&platform=All&function=fixId&fixids=IBM-MQ-Light-Windows-x64-production-L150408-IT08000&includeSupersedes=0
Linux	Developer	IT08000	http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%2FWebSphere&product=ibm/WebSphere/IBM+MQ+Light&release=All&platform=All&function=fixId&fixids=IBM-MQ-Light-Linux-x64-developer-L150408-IT08000&includeSupersedes=0
Linux	Production	IT08000	http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%2FWebSphere&product=ibm/WebSphere/IBM+MQ+Light&release=All&platform=All&function=fixId&fixids=IBM-MQ-Light-Linux-x64-production-L150408-IT08000&includeSupersedes=0
Mac	Developer	IT08000	http://www.ibm.com/support/fixcentral/swg/selectFixes?parent=ibm%2FWebSphere&product=ibm/WebSphere/IBM+MQ+Light&release=All&platform=All&function=fixId&fixids=IBM-MQ-Light-Mac-x64-developer-L150408-IT08000&includeSupersedes=0

The following link describes how to re-use the data from your existing installation:
http://www.ibm.com/support/knowledgecenter/SSBJCR_1.0.0/com.ibm.mq.koa.doc/tmql_data.htm

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

Workarounds and Mitigations

None

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References

Complete CVSS v2 Guide
On-line Calculator v2

Off

IBM WebSphere Application Server Security Bulletin

Acknowledgement

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

Change History

14 April 2015: 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 IBM MQ Light (CVE-2015-0138)