Security Bulletin
Summary
The RC4 “Bar Mitzvah” Attack for SSL/TLS affects the following IBM Jazz Team Server based Applications: Collaborative Lifecycle Management (CLM), Rational Requirements Composer (RRC), Rational DOORS Next Generation (RDNG), Rational Engineering Lifecycle Manager (RELM), Rational Team Concert (RTC), Rational Quality Manager (RQM), Rational Rhapsody Design Manager (Rhapsody DM), and Rational Software Architect (RSA DM).
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
Rational Collaborative Lifecycle Management 3.0.1 - 6.0
Rational Quality Manager 2.0 - 2.0.1
Rational Quality Manager 3.0 - 3.0.1.6
Rational Quality Manager 4.0 - 4.0.7
Rational Quality Manager 5.0 - 5.0.2
Rational Quality Manager 6.0
Rational Team Concert 2.0 - 2.0.0.2
Rational Team Concert 3.0 - 3.0.6
Rational Team Concert 4.0 - 4.0.7
Rational Team Concert 5.0 - 5.0.2
Rational Team Concert 6.0
Rational Requirements Composer 2.0 - 2.0.0.4
Rational Requirements Composer 3.0 - 3.0.1.6
Rational Requirements Composer 4.0 - 4.0.7
Rational DOORS Next Generation 4.0 - 4.0.7
Rational DOORS Next Generation 5.0 - 5.0.2
Rational DOORS Next Generation 6.0
Rational Engineering Lifecycle Manager 1.0- 1.0.0.1
Rational Engineering Lifecycle Manager 4.0.3 - 4.0.7
Rational Engineering Lifecycle Manager 5.0 - 5.0.2
Rational Engineering Lifecycle Manager 6.0
Rational Rhapsody Design Manager 3.0 - 3.0.1
Rational Rhapsody Design Manager 4.0 - 4.0.7
Rational Rhapsody Design Manager 5.0 - 5.0.2
Rational Rhapsody Design Manager 6.0
Rational Software Architect Design Manager 3.0 - 3.0.1
Rational Software Architect Design Manager 4.0 - 4.0.7
Rational Software Architect Design Manager 5.0 - 5.0.2
Rational Software Architect Design Manager 6.0
Remediation/Fixes
If your product is deployed on IBM WebSphere® Application Server (WAS), you should apply the WAS remediation/mitigation according to the bulletin published by WAS:
If your product is deployed on Apache Tomcat, apply the workarounds listed in the Workaround and Mitigation section.
Update your supplied IBM® Java SDK according to
Workarounds and Mitigations
If your product is deployed on IBM WebSphere® Application Server (WAS), you should apply the WAS remediation/mitigation according to the bulletin published by WAS.
If your product is deployed on Apache Tomcat, then you should apply the following mitigation:
- Open the <Jazz Install>\server\tomcat\conf\server.xml file, and search for 'SSL_RSA_WITH_RC4_128_MD5, SSL_RSA_WITH_RC4_128_SHA, ' (no quotes), and delete the found text. If your version of server.xml has any other ciphers containing the "RC4", delete that cipher also.
- Stop and restart the Apache Tomcat server.
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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Important Note
IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.
References
Change History
14 April 2015: Initial Publication
28 August 2015: Enhanced Remediation section
*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.
Product Synonym
Rational DOORS Next Generation;Rational Team Concert;Rational Quality Manager;Rational Engineering Lifecycle Manager;Rational Collaborative Lifecycle Management Solution
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Document Information
Modified date:
28 April 2021
Initial Publish date:
14 April 2015
UID
swg21715543