Security Bulletin
Summary
The RC4 "Bar Mitzvah Attack" for SSL/TLS affects IBM Sterling B2B Integrator and IBM Sterling File Gateway.
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 Sterling B2B Integrator 5.2
IBM Sterling File Gateway 2.2
Sterling Integrator 5.1
Sterling File Gateway 2.1
Remediation/Fixes
Product & Version | Remediated Fix |
| Sterling Integrator 5.1 or Sterling File Gateway 2.1 |
|
| IBM Sterling B2B Integrator 5.2 or IBM Sterling File Gateway 2.2 |
|
Workarounds and Mitigations
The following table provides instructions on how to make configuration changes to both Sterling B2B Integrator 5.2 and 5.1. After making the necessary changes, you will need to stop and restart Sterling B2B Integrator in order for these changes to take effect.
| If you use: | Then do this: |
| Sterling B2B Integrator 5.1 or 5.2 or Sterling File Gateway 2.1 or 2.2 | Put following entries in customer_overrides.properties security.WeakCipherSuite=TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_DES_CBC_SHA security.StrongCipherSuite=TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_DES_CBC_SHA security.AllCipherSuite=TLS_RSA_WITH_AES_128_CBC_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_DES_CBC_SHA IBM recommends the use of strong ciphers in the configuration for adapters and services. |
| Sterling Integrator 5.1 or Sterling File Gateway 2.1 |
|
| Sterling B2B Integrator 5.2 or Sterling File Gateway 2.2 | For IBM® SDK Java™ Technology Edition, Version 7, add the property jdk.tls.disabledAlgorithms=RC4 to the end of java.security file located in <Your_Sterling_Integrator_Install_Dirrectory>/ jdk/jre/lib/security |
| WSMQ adapters and services MQFTE adapters and services CD:Server adapters and services MEIG Message Configuration Adapter | IBM recommends the use of strong ciphers in the configuration for adapters and services and not to use the cipher with RC4. |
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
Change History
10 April 2015: Original version published
14 April 2015: Updated Remediation/Fixes
*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
swg21709849