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AUSCERT External Security Bulletin Redistribution
ESB-2015.1060
Security Bulletin: Vulnerability in RC4 stream cipher affects IBM WebSphere
Sensor Events and IBM Real-Time Asset Locator (CVE-2015-2808)
17 April 2015
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AusCERT Security Bulletin Summary
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Product: IBM WebSphere Sensor Events
Publisher: IBM
Operating System: AIX
Linux variants
Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-2808
Reference: ESB-2015.1041
ESB-2015.1037
ESB-2015.1036
ESB-2015.1035
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21882873
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Security Bulletin: Vulnerability in RC4 stream cipher affects IBM WebSphere
Sensor Events and IBM Real-Time Asset Locator (CVE-2015-2808)
Document information
More support for:
WebSphere Sensor Events
Software version:
6.2, 7.0
Operating system(s):
AIX 64bit, Linux, Windows, Windows 2003 server
Reference #:
1882873
Modified date:
2015-04-16
Security Bulletin
This document applies only to the following language version(s):
Language Independent
Summary
The RC4 "Bar Mitzvah" Attack for SSL/TLS affects IBM WebSphere Application
Server that is used by IBM WebSphere Sensor Events and IBM Real-Time
Asset Locator.
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
Affected Product and Version(s) Product and Version shipped as
a component
WebSphere Sensor Events version 7.0 IBM WebSphere Application Server
version 7.0
IBM Real-Time Asset Locator version 7.1 IBM WebSphere Application
Server version 7.0
Remediation/Fixes
On the IBM HTTP server, edit the following file:
/opt/IBM/HTTPServer/conf/httpd.conf
In the httpd.conf file, locate the following two lines:
SSLCipherSpec ALL SSL_RSA_WITH_RC4_128_MD5
SSLCipherSpec ALL SSL_RSA_WITH_RC4_128_SHA
Modify the two lines to match the following two lines:
##SSLCipherSpec ALL SSL_RSA_WITH_RC4_128_MD5
##SSLCipherSpec ALL SSL_RSA_WITH_RC4_128_SHA
After you modify the two lines, restart the IBM HTTP server.
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alerts like this.
References
Complete CVSS Guide
On-line Calculator V2
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.
Cross reference information
Segment Product Component Platform Version
Smarter Cities IBM Real-Time Not Applicable AIX, Linux, 7.1
Asset Locator Windows 2003 server,
Windows 2008 server
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