Security Bulletin
Summary
The RC4 "Bar Mitzvah Attack" for Secure Socket Layer (SSL) and Transport Layer Security (TLS) affects TPF Toolkit.
Vulnerability Details
CVEID: CVE-2015-2808
DESCRIPTION: The RC4 algorithm, as used in the TLS protocol and SSL protocol, could allow a remote attacker to obtain sensitive information. An attacker could exploit this vulnerability to remotely expose account credentials without requiring an active man-in-the-middle session. Successful exploitation could allow an attacker to retrieve credit card data or other sensitive information. This vulnerability is commonly referred to as "Bar Mitzvah Attack".
CVSS Base Score: 5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/101851 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Affected Products and Versions
TPF Toolkit 4.0.x and 4.2.x
Remediation/Fixes
|
Product | VRMF | APAR | Remediation/First Fix |
| TPF Toolkit | 4.2.x | JR53501 |
|
| TPF Toolkit | 4.0.x | JR53500 |
|
Workarounds and Mitigations
For TPF Toolkit 4.0.x and 4.2.x, you can disable the RC4 encryption algorithm for the IBM® Runtime Environment Java™ Technology Edition, Version 7 that is used by TPF Toolkit and the DSTORE server on any remote systems. To disable the RC4 encryption algorithm, complete the following steps:
- Close TPF Toolkit.
- Navigate to the %TPFHOME%\jdk\jre\lib\security directory, and add or update the jdk.tls.disabledAlgorithms property in the java.security file to include the RC4 encryption algorithm:
jdk.tls.disabledAlgorithms=SSLv3, RC4 - On each remote system that hosts a DSTORE server for TPF Toolkit, navigate to the $JAVA_HOME\jre\lib\security directory and add or update the jdk.tls.disabledAlgorithms property in the java.security file to include the RC4 encryption algorithm:
jdk.tls.disabledAlgorithms=SSLv3, RC4
Note: $JAVA_HOME is the installation directory for Java on the remote systems. - Restart TPF Toolkit.
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References
Change History
19 Nov 2016: Removed references to versions 3.6.x - no longer in service
17 July 2015: Updated with fix for versions 4.0.x and 4.2.x
10 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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Document Information
Modified date:
02 August 2018
UID
swg21702157