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AUSCERT External Security Bulletin Redistribution
ESB-2015.1141
Security Bulletin: Vulnerability in RC4 stream cipher
affects IBM Cognos Mobile (CVE-2015-2808)
27 April 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Cognos Mobile
Publisher: IBM
Operating System: Android
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-2808
Reference: ESB-2015.1130
ESB-2015.1128
ESB-2015.1127
ESB-2015.1126
ESB-2015.1120
ESB-2015.1118
ESB-2015.1117
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21883588
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Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Cognos
Mobile (CVE-2015-2808)
Document information
More support for:
Cognos Mobile
Cognos Mobile
Software version:
10.1.1, 10.2, 10.2.1
Operating system(s):
Google Android
Software edition:
All Editions
Reference #:
1883588
Modified date:
2015-04-24
Security Bulletin
Summary
The RC4 Bar Mitzvah Attack for SSL/TLS affects IBM Cognos Mobile.
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 Cognos Mobile 10.2.2.1.1 and earlier
Remediation/Fixes
IBM Cognos Mobile 10.2.2.1.2
https://play.google.com/store/apps/details?id=com.ibm.cogmob.artoo
You should verify applying this fix does not cause any compatibility issues.
The fix disables RC4 stream cipher by default. If you change the default
setting after applying the fix, you 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.
Workarounds and Mitigations
None
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References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Acknowledgement
None
Change History
27 April 2015: Original Version Published
*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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