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HistoryAug 03, 2018 - 4:23 a.m.

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

2018-08-0304:23:43
www.ibm.com
35

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

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

| VRMF|Remediation/First Fix
—|—|—
Rational Business Developer| v7.5.1.x
v8.0.1.x| IBM Java Platform Standard Edition Version 6 SR16 FP3 iFix (IV70681 + IV71888)
Rational Business Developer| v8.5.0
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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

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