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AUSCERT External Security Bulletin Redistribution
ESB-2015.1459
Security Bulletin: Vulnerability in RC4 stream cipher
affects IBM Security AppScan Source (CVE-2015-2808)
4 June 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Security AppScan Source
Publisher: IBM
Operating System: Linux variants
Windows
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-2808
Reference: ESB-2015.1266
ESB-2015.1118
ESB-2015.0964
ESB-2015.0960
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21959069
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Security Bulletin: Vulnerability in RC4 stream cipher affects IBM Security
AppScan Source (CVE-2015-2808)
Document information
More support for:
IBM Security AppScan Source
Software version:
8.6.0.2
Operating system(s):
Linux, Windows
Reference #:
1959069
Modified date:
2015-06-03
Security Bulletin
Summary
The RC4 Bar Mitzvah Attack for SSL/TLS affects IBM Security AppScan Source
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:
Seehttps://exchange.xforce.ibmcloud.com/vulnerabilities/101851for 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 Security AppScan Source 8.6.x
Remediation/Fixes
IBM Security AppScan Source 8.6
patch:http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FRational
%2FAppScan+Source+Edition&fixids=AppScanSource-8.6.0.2-PSIRT-Fix&source=SAR
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
Change History
June 3, 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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