Security Bulletin
Summary
The RC4 “Bar Mitzvah” Attack for SSL/TLS affects IBM InfoSphere Optim Configuration 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 InfoSphere Optim Configuration Manager for DB2 for Linux, UNIX, and Windows V2.1.0.0 through 3.1.0.1.
IBM InfoSphere Optim Configuration Manager for DB2 for z/OS V2.1.0.0 through 3.1.0.1.
Remediation/Fixes
|
V3.1.0.1 | Fix Central (Interim Fix 002) or see Workarounds and Mitigations below. |
| All other versions | Replace JRE. For Linux platforms, visit http://www.ibm.com/developerworks/java/jdk/linux/download.html#java7. For Windows platforms, contact IBM Technical Support. |
Workarounds and Mitigations
For OCM versions 3.1.0.0 through 3.1.0.1 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 Configuration 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 OCM 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.
Get Notified about Future Security Bulletins
References
Change History
2015-04-17 -- Initial Security Bulletin
2015-07-01 -- Added JRE download link
*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.
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Document Information
Modified date:
16 June 2018
UID
swg21875279