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Update: Security Bulletin: Vulnerability in SSLv3 affects IBM® SDK, Java Technology Edition for AIX/VIOS (CVE-2014-3566)

Security Bulletin


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® SDK, Java Technology Edition.

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 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

AIX 5.3, 6.1 and 7.1.
VIOS 2.2.x

The following fileset levels (VRMF) are vulnerable, if the respective Java version is installed:
For Java7 Release 1: Equal to or less than 7.1.0.15
For Java7: Equal to or less than 7.0.0.135
For Java6: Equal to or less than 6.0.0.460
For Java5: Equal to or less than 5.0.0.580

Note: To find out whether the affected filesets are installed on your systems, refer to the lslpp command found in AIX user's guide.

Example: lslpp -L | grep -i java

Remediation/Fixes

Refer to the following URL for latest Remediation/Fixes details:
http://aix.software.ibm.com/aix/efixes/security/java_oct2014_advisory.asc
.

Workarounds and Mitigations

IBM SDK, Java Technology Edition, Version 7: Please refer to the following link:

http://www.ibm.com/support/knowledgecenter/SSYKE2_7.0.0/com.ibm.java.security.component.70.doc/security-component/jsse2Docs/overrideSSLprotocol.html

IBM SDK, Java Technology Edition, Version 6: Please refer to the following link:

http://www.ibm.com/support/knowledgecenter/SSYKE2_6.0.0/com.ibm.java.security.component.60.doc/security-component/jsse2Docs/overrideSSLprotocol.html

IBM SDK, Java Technology Edition, Version 5:

Currently, the only solution for IBM SDK, Java Technology Edition, Version 5 is to make programmatic change to an application designed to run on the IBM 5.0 JRE (Java Runtime Environment). For example:

If using javax.net.ssl.HttpsURLConnection

Set the https.protocols system property explicitly to disallow SSLv3 (the default value for this property allows SSLv3). For example use the following command line option:

-Dhttps.protocols=TLSv1


If using javax.net.ssl.SSLSocket or javax.net.ssl.SSLServerSocket

Programmatically set the enabled protocol for the socket(s) to "TLSv1" using an appropriate API. The best solution depends on the application. For example:

SSLContext.getInstance()          e.g. SSLContext.getInstance("TLSv1")
SSLEngine.setEnabledProtocols()   e.g. engine.setEnabledProtocols(new String[] {"TLSv1"});
SSLSocket.setEnabledProtocols()   e.g. socket.setEnabledProtocols(new String[] {"TLSv1"});
SSLServerSocket.setEnabledProtocols()  e.g. serverSocket.setEnabledProtocols(new String[] {"TLSv1"});

IBM recommends that you review your entire environment to identify areas that enable the SSLv3 protocol and take appropriate mitigation and remediation actions. The most immediate mitigation action that can be taken is disabling SSLv3. You should verify disabling SSLv3 does not cause any compatibility issues.

Get Notified about Future Security Bulletins

References

Related information

Change History

19 November 2014: Updated Remediation/Fixes section
26 October 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.

Document information

More support for: AIX Enterprise Edition

Software version: 5.3, 6.1, 7.1

Operating system(s): AIX

Reference #: T1021439

Modified date: 19 November 2014


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