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AUSCERT External Security Bulletin Redistribution
Security Bulletin: Vulnerability in RC4 stream cipher affects IBM
InfoSphere Optim Performance Manager (CVE-2015-2808)
15 April 2015
AusCERT Security Bulletin Summary
Product: IBM InfoSphere Optim Performance Manager
Operating System: AIX
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
CVE Names: CVE-2015-2808
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Security Bulletin: Vulnerability in RC4 stream cipher affects IBM InfoSphere
Optim Performance Manager (CVE-2015-2808)
More support for:
InfoSphere Optim Performance Manager
4.1, 18.104.22.168, 4.1.1, 5.1, 5.1.1, 22.214.171.124, 5.2, 5.3, 5.3.1
AIX, HP-UX, Inspur K-UX, Linux, Solaris, Windows
The RC4 Bar Mitzvah Attack for SSL/TLS affects IBM InfoSphere Optim
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
CVSS Base Score: 5
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/101851 for the current
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM Optim Performance Manager for DB2 on Linux, UNIX, and Windows version 4.1
IBM InfoSphere Optim Performance Manager for DB2 on Linux, UNIX, and Windows
version 5.1 through 5.3.1
OPM Version Download URL
4.1 126.96.36.199 No fix available yet
5.2 5.3 No fix available yet, see Workarounds and Mitigations
5.3.1 Fix Central (Interim Fix 8409) or see Workarounds and Mitigations
For OPM versions 4.1 through 188.8.131.52, an IBM Java fix will be made available
by April 27, 2015. We will update this Security Bulletin when the IBM Java
fixes are available.
For OPM versions 5.2 through 5.3, until the IBM Java fix will be made
available by April 27, 2015, follow the Workarounds and Mitigation section
For OPM version 5.3.1, installing the OPM Interim Fix changes the Java
Security configuration of the web console server to disallow RC4 cipher suites
for HTTPS connections (using the SSL/TLS protocol). If you are not able to
install the OPM Interim Fix, follow the Workarounds and Mitigation section
Workarounds and Mitigations
For OPM versions 5.2 through 5.3.1 disable the RC4 cipher suite by adding
"RC4" to the list of disabled algorithms defined by the
jdk.tls.disabledAlgorithms security property in java.security file.
Edit the java.security file that is located in the InfoSphere Optim
Performance Manager installation directory:
Add the following line and save the file:
If the jdk.tls.disabledAlgorithms property was already enabled (without a "#"
character at the beginning of the line), i.e.:
then append the text ", RC4" to the end of the line and save the file.
Restart the OPM Web Console server for this change to take effect.
You should verify applying this configuration change does not cause any
compatibility issues. Not disabling the RC4 stream cipher will expose yourself
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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Complete CVSS Guide
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IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
<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.
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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