Security Bulletin: A security vulnerability has been identified in WebSphere Application Server shipped with Tivoli Usage and Accounting Manager/SmartCloud Cost Management (CVE-2015-4000).

Summary

WebSphere Application Server is shipped as a component of SmartCloud Cost Management. WebSphere Application Server is shipped as a component of Tivoli Integrated Portal, which is shipped as a component of Tivoli Usage and Accounting Manager. Information about a security vulnerability affecting WebSphere Application Server has been published in security bulletins.

The LogJam Attack on Diffie-Hellman ciphers (CVE-2015-4000) may affect some configurations of IBM WebSphere Application Server Full Profile, IBM WebSphere Application Server Liberty Profile, and IBM WebSphere Application Server Hypervisor Edition.

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 and Version
—|—

IBM Tivoli Usage and Accounting Manager V2.1, V2.1.0.1, V7.3.0.4| IBM Tivoli Integrated Portal, Version 2.2 and all fixpacks

IBM SmartCloud Cost Management V2.1.0.3, V2.1.0.4|
Websphere Application Server Liberty Profile V8.5.5

Remediation/Fixes

Please refer to the WAS security bulletin to remediate the vulnerabilities related to Security Bulletin: Vulnerability with Diffie-Hellman ciphers may affect IBM WebSphere Application Server (CVE-2015-4000)