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AUSCERT External Security Bulletin Redistribution
Security Bulletin: SSL/TLS side channel timing vulnerability
on WebSphere DataPower (CVE-2014-0852)
18 August 2014
AusCERT Security Bulletin Summary
Product: IBM WebSphere DataPower SOA Appliances
Operating System: Network Appliance
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
CVE Names: CVE-2014-0852
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Security Bulletin: SSL/TLS side channel timing vulnerability on WebSphere
More support for:
WebSphere DataPower SOA Appliances
4.0.2, 5.0.0, 6.0.0, 6.0.1
DataPower appliances might be subject to side channel timing based attacks.
CVE ID: CVE-2014-0852
DataPower appliances might be subject to side channel timing based attacks
resulting in the decryption of an SSL/TLS secured transaction. The attack can
only be performed if the attacker is on the same LAN segment as the DataPower
appliance. The attacker has to send several million requests to the DataPower
appliance and monitor the response times for each of these messages in order
to recover the PreMasterSecret used in the SSL/TLS communication.
CVSS Base Score: 4.3 CVSS Temporal Score: See
http://xforce.iss.net/xforce/xfdb/90753 for the current score CVSS
Environmental Score*: Undefined CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
Products: WebSphere DataPower SOA Appliances.
Versions: All versions through 22.214.171.124, 126.96.36.199, 188.8.131.52, 184.108.40.206. Note that
versions 220.127.116.11 and higher are not affected by this vulnerability.
Hardware models: All platforms - 9004, 9005 and HS22 Blade. (9004 MTM -
9235-xxx; 9005 MTM - 7198 (1U) and 7199 (2U); HS22 - Integration Blade XI50B
Note that DataPower Virtual edition is not affected. Remediation/Fixes
Fix for 9005 and HS22 platforms are available in versions 18.104.22.168, 22.214.171.124,
126.96.36.199. You can also upgrade to version 188.8.131.52 or higher as they are not
affected by this vulnerability.
Fix for 9004 platform is available in versions 184.108.40.206 and 220.127.116.11. Note that
due to the hardware limitations of the 9004 platform (which has reached
end-of-service), the fix might not completely prevent DataPower against timing
based attacks, as there might still be a visible timing latency on the
responses on 9004 platforms.
Refer to APAR IT01111 for download links. Customers using DataPower v4.0.2 on
extended support, contact customer service. Workarounds and Mitigations
Secure the LAN environment around DataPower appliances.
Monitor for suspicious activity around your network. Any illicit clients
should be denied access to the network immediately. References Complete CVSS
Guide On-line Calculator V2 Related information IBM Secure Engineering Web
Portal IBM Product Security Incident Response Blog Acknowledgement
The vulnerability was reported to IBM by Juraj Somorovsky (Chair for Network
and Data Security, Ruhr University Bochum), Sebastian Schinzel (Department of
Computer Science, Mnster University of Applied Sciences), Christopher Meyer
(Chair for Network and Data Security, Ruhr University Bochum) Change History
08 August 2014: 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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