Security Bulletin
Summary
The RC4 “Bar Mitzvah” Attack for SSL/TLS affects IBM InfoSphere Optim Performance Manager.
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
IBM Optim Performance Manager for DB2 on Linux, UNIX, and Windows version 4.1 through 4.1.1
IBM InfoSphere Optim Performance Manager for DB2 on Linux, UNIX, and Windows version 5.1 through 5.3.1
Remediation/Fixes
| OPM Version | Download URL |
| 4.1 - 5.1.1.1 | Replace JRE (V6 SR16-Fix Pack 4) |
| 5.2 – 5.3 | Replace JRE (V7 SR9) |
| 5.3.1 | Fix Central (Interim Fix 8409) or see Workarounds and Mitigations |
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 below.
Workarounds and Mitigations
For OPM 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:
/jre/lib/security/java.security
Add the following line and save the file:
jdk.tls.disabledAlgorithms=RC4
If the jdk.tls.disabledAlgorithms property was already enabled (without a "#" character at the beginning of the line), i.e.:
jdk.tls.disabledAlgorithms=SSLv3
then append the text ", RC4" to the end of the line and save the file.
jdk.tls.disabledAlgorithms=SSLv3, RC4
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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References
Acknowledgement
None
Change History
04/10/2015 -- Initial Security Bulletin
06/23/2015 -- Final Security Bulletin
*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
Internal Update History:
2015-04-10: ckadner - initial draft
Product Synonym
OPM
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Document Information
Modified date:
08 July 2021
UID
swg21722406