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AUSCERT External Security Bulletin Redistribution
ESB-2014.2212
Security Bulletin: Vulnerability in SSLv3 affects IBM uBuild
(CVE-2014-3566)
25 November 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM uBuild
Publisher: IBM
Operating System: Linux variants
Windows
Impact/Access: Access Confidential Data -- Remote with User Interaction
Reduced Security -- Remote with User Interaction
Resolution: Patch/Upgrade
CVE Names: CVE-2014-3566
Reference: ASB-2014.0122
ESB-2014.1953
ESB-2014.1950
ESB-2014.1949
ESB-2014.1947
ESB-2014.1944
ESB-2014.1922
ESB-2014.1858
ESB-2014.1896.2
Original Bulletin:
http://www-01.ibm.com/support/docview.wss?uid=swg21690838
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Security Bulletin: Vulnerability in SSLv3 affects IBM uBuild (CVE-2014-3566)
Security Bulletin
Document information
More support for:
IBM uBuild
General Information
Software version:
5.0, 5.0.1, 5.0.1.1, 5.0.1.2, 5.0.1.3
Operating system(s):
Linux, Windows
Reference #:
1690838
Modified date:
2014-11-21
Summary
SSLv3 contains a vulnerability that has been referred to as the Padding
Oracle On Downgraded Legacy Encryption (POODLE) attack. SSLv3 is enabled in
IBM uBuild.
Vulnerability Details
CVE-ID: CVE-2014-3566
Description: Product could allow a remote attacker to obtain sensitive
information, caused by a design error when using the SSLv3 protocol. A remote
user with the ability to conduct a man-in-the-middle attack could exploit
this vulnerability via a POODLE (Padding Oracle On Downgraded Legacy
Encryption) attack to decrypt SSL sessions and access the plaintext of
encrypted connections.
CVSS Base Score: 4.3
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/97013
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Affected Products and Versions
IBM uBuild 5.0, 5.0.1, 5.0.1.1, 5.0.1.2, and 5.0.1.3 on all supported
platforms.
Remediation/Fixes
Upgrade to IBM uBuild Fix Pack 4 (5.0.1.4) for 5.0.1 as SSLv3 is
automatically disabled:
Note: Old agents may not be able to connect to IBM uBuild when SSLv3 has not
been disabled on the agent. To disable SSLv3, upgrade all old agents to the
latest version. There are also known issues with older plugins that connect
back to the server to upload source changes, issues, reports, etc. when using
the IBM JDK/JRE. To avoid any potential issues, upgrade all plugins in your
server to the latest version available on our plugins page.
Workarounds and Mitigations
Note: This mitigation is intended for the servers in "Affected Products and
Versions" only. It should not be applied on later releases. Additionally, IBM
uBuild Agents with a version earlier than 5.0.0-584477 may be unable to
connect after applying this change. It is highly recommended to address this
issue by upgrading the IBM uBuild server to 5.0.1.4 and then upgrading all
agents.
Mitigating POODLE attacks on HTTP communication (by default, communication on port 8443)
1. Open the file <server_install_dir>/opt/tomcat/conf/server.xml in a text editor
2. Find the XML element that begins with <Connector port="${install.server.web.https.port}"
3. Update the following attributes within this XML element.
Do not add any extra characters or whitespace. If the attribute does
not exist, then create it.
sslProtocol="TLS"
sslEnabledProtocols="TLSv1,TLSv1.1,TLSv1.2"
References
Complete CVSS Guide
On-line Calculator V2
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Subscribe to Security Bulletins
Acknowledgement
None
Change History
* 21 November 2014: Original copy 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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