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Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Rational Business Developer (CVE-2015-2808)

Security Bulletin


Summary

The RC4 "Bar Mitzvah" Attach for SSL/TLS affects IBM Rational Business Developer.

Vulnerability Details

CVE-ID: 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

RBD version 9.1.1 and earlier

Remediation/Fixes

Please upgrade your SDK to the following interim fix level below:

Product

VRMFRemediation/First Fix
Rational Business Developerv7.5.1.x
v8.0.1.x
IBM Java Platform Standard Edition Version 6 SR16 FP3 iFix (IV70681 + IV71888)
Rational Business Developerv8.5.0
v8.5.1.x
v9.0
v9.0.1.x
v9.1.1
None

Workarounds and Mitigations

If you are using RBD v8.5.0 v8.5.1.x v9.0 v9.0.1.x and v9.1.1, then the following steps can be used to remove RC4 from the list of available algorithms:

1. Ensure the product is not running.

2. Locate the java.security file used by the project:
<install_root>/jdk/jre/lib/security/java.security

3. Edit the java.security file with a text editor and add RC4 as one of disabled algorithms, For example
jdk.tls.disabledAlgorithms=SSLv3,RC4

4. Save the file and restart the product

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

None

Change History

* 5 May 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.

Internal Use Only

PSIRT Advisory 3058, Record 53877

*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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

[{"Product":{"code":"SSMQ79","label":"Rational Business Developer"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Component":"Java Generation","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"7.5;7.5.1;7.5.1.1;7.5.1.2;7.5.1.3;7.5.1.4;7.5.1.5;7.5.1.6;7.5.1.7;7.5.1.8;8.0.1;8.0.1.1;8.0.1.2;8.0.1.3;8.0.1.4;8.0.1.5;8.5;8.5.1;8.5.1.1;8.5.1.2;9.0;9.0.1;9.0.1.1;9.1;9.1.1","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]

Document Information

Modified date:
02 August 2018

UID

swg21902385