Operating System:

[AIX]

Published:

14 April 2015

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2015.0963
Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Financial
        Transaction Manager (FTM) for ACH Services, Check Services
              and Corporate Payment Services (CVE-2015-2808)
                               14 April 2015

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Financial Transaction Manager
Publisher:         IBM
Operating System:  AIX
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
Resolution:        Mitigation
CVE Names:         CVE-2015-2808  

Reference:         ESB-2015.0962
                   ESB-2015.0961
                   ESB-2015.0960
                   ESB-2015.0958
                   ESB-2015.0956
                   ESB-2015.0955
                   ESB-2015.0954
                   ESB-2015.0953
                   ESB-2015.0950.2
                   ESB-2015.0949.2
                   ESB-2015.0948.2
                   ESB-2015.0947.2
                   ESB-2015.0946.2
                   ESB-2015.0944.2

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=swg21718516

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Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Financial 
Transaction Manager (FTM) for ACH Services, Check Services and Corporate 
Payment Services (CVE-2015-2808)

Security Bulletin

Document information

More support for:

Financial Transaction Manager

IBM Financial Transaction Manager for ACH Services

Software version:

3.0.0.0, 3.0.0.1, 3.0.0.2, 3.0.0.3

Operating system(s):

AIX

Reference #:

1718516

Modified date:

2015-04-10

Summary

The RC4 Bar Mitzvah Attack for SSL/TLS affects Financial Transaction Manager 
for ACH Services, Check Services, and Corporate Payment Services.

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

- - FTM for ACH v3.0.0.0, v3.0.0.1, v3.0.0.2, v3.0.0.3

- - FTM for Check v3.0.0.0, v3.0.0.1, v3.0.0.2, v3.0.0.3

- - FTM for CPS v3.0.0.0, v3.0.0.1, v3.0.0.2, v3.0.0.3

Remediation/Fixes

None

Workarounds and Mitigations

Disable RC4.

This is achieved by adding RC4 to the list of disabled algorithms defined by 
the jdk.tls.disabledAlgorithms security property in java.security file located
in the {Install Location}/shared/v300/pfs/_jvm/jre/lib/security directory, for
example: jdk.tls.disabledAlgorithms=SSLv3, RC4

Before disabling RC4, verify that this configuration change does not cause any
compatibility issues. Not disabling the RC4 stream cipher will expose your 
environment to the attack described above. IBM recommends that you review your
entire environment to identify other areas where you have enabled the RC4 
stream cipher and take appropriate mitigation and remediation actions.

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References

Complete CVSS Guide

On-line Calculator V2

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Acknowledgement

None

Change History

10 April 2014: 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

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.

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