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AUSCERT External Security Bulletin Redistribution
ESB-2016.0683
Security Bulletin: A vulnerbility in Bouncy Castle affects
Rational Service Tester (CVE-2015-7940 )
14 March 2016
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Rational Service Tester for SOA Quality
Publisher: IBM
Operating System: Linux variants
Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-7940
Reference: ESB-2016.0214
ESB-2015.3119
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg21978823
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Security Bulletin: A vulnerbility in Bouncy Castle affects Rational Service
Tester (CVE-2015-7940 )
Security Bulletin
Document information
More support for:
Rational Service Tester for SOA Quality
Test Execution
Software version:
8.2, 8.2.0.1, 8.2.0.2, 8.2.0.3, 8.2.0.4, 8.2.0.5, 8.2.0.6, 8.2.1, 8.2.1.1,
8.2.1.2, 8.2.1.3, 8.2.1.4, 8.2.1.5, 8.3, 8.3.0.1, 8.3.0.2, 8.3.0.3, 8.5,
8.5.0.1, 8.5.0.2, 8.5.1, 8.5.1.1, 8.5.1.2, 8.5.1.3, 8.6, 8.6.0.1, 8.6.0.2,
8.7, 8.7.0.1, 8.7.0.2, 8.7.1, 8.7.1.1
Operating system(s):
Linux, Windows
Reference #:
1978823
Modified date:
2016-03-11
Summary
Bouncy Castle could allow a remote attacker to obtain sensitive information,
caused by an invalid curve attack. An attacker could exploit this
vulnerability to extract private keys used in elliptic curve crytpography and
obtain sensitive information.
Vulnerability Details
CVEID:
CVE-2015-7940
DESCRIPTION:
Bouncy Castle could allow a remote attacker to obtain sensitive information.
An attacker could exploit this vulnerability using an invalid curve attack to
extract private keys used in elliptic curve cryptography and obtain sensitive
information.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/107739
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
RST versions 8.2.*, 8.3.*, 8.5.*, 8.6.*, 8.7.*.
Remediation/Fixes
It is strongly recommended to upgrade to RPT version 9.0.
For older releases, you can alternatively update the Bouncy Castle library
manually:
1) Download the bouncy castle version 1.5.3 ( the jar can be downloaded here
https://www.bouncycastle.org/download/jce-jdk13-154.jar ).
2) Locate the previous bouncy castle librarie delivered, this will be
typically at the following path:
INSTALLATION_DIRECTORY/IBM_SHARED_PLUGINS/plugins/com.ibm.rational.ttt.common.models.core_plugin_version/lib/approvedbouncy
For example::
C:\Program
Files\IBM\IBMIMSharedRPT8702\plugins\com.ibm.rational.ttt.common.models.core_8.5.210.v20150622_1524\lib\approvedbouncy
for RPT v8.7.0.2.
3) Rename the bouncy castle jar version 1.5.3 downloaded to the name of the
previous delivered jar ( jce-jdk13-134.jar ).
4) Replace the old jar with the new one.
Workarounds and Mitigations
None.
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References
Complete CVSS v3 Guide
On-line Calculator v3
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
According to the Forum of Incident Response and Security Teams (FIRST), the
Common Vulnerability Scoring System (CVSS) is an "industry open standard
designed to convey vulnerability severity and help to determine urgency and
priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY
OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT
OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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