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Security Bulletin: Vulnerability in RC4 stream cipher affects Rational Service Tester (CVE-2015-2808)

Security Bulletin


Summary

The RC4 “Bar Mitzvah” Attack for SSL/TLS affects Rational Service Tester.

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: 5.0
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 Service Tester versions 8.2.*, 8.3.*, 8.5.*, 8.6.* and 8.7.

Remediation/Fixes

Download Java from one of the links below. Edit java.security and disable RC4 by adding it to the list of disabled algorithms. For example,

jdk.tls.disabledAlgorithms=SSLv3, RC4

For a default installation the file java.security can be found as indicated below.
Windows: C:\Program Files\IBM\SDP\jdk\jre\lib\security.
Linux: /opt/IBM/SDP/jdk/jre/lib/security.

ProductVRMFAPARRemediation/First Fix
RST8.7NoneDownload Java 7 SR8 FP10 +IV70681
RST8.6 - 8.6.xNoneDownload Java 7 SR8 FP10 +IV70681
RST8.5 - 8.5.xNoneDownload Java 7 SR8 FP10 +IV70681
RST8.3 - 8.3.xNoneDownload Java 7 SR8 FP10 +IV70681
RST8.2 - 8.2.1.xNoneDownload Java 7 SR8 FP10 +IV70681

Workarounds and Mitigations

None

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References

Complete CVSS v2 Guide
On-line Calculator v2

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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:
17 June 2018

UID

swg21882969

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