Security Bulletin: Multiple security vulnerabilities affect Liberty for Java for IBM Bluemix (CVE-2016-5573, CVE-2016-5597, CVE-2016-5983)

Summary

There are multiple vulnerabiltities in the IBM® SDK Java™ Technology Edition that is shipped with IBM WebSphere Application Server. These issues were disclosed as part of the IBM SDK for Java updates in October 2016. These may affect some configurations of IBM WebSphere Application Server Liberty. There is a potential code execution vulnerability in WebSphere Application Server.

Vulnerability Details

If you run your own Java code using the IBM Java Runtime delivered with this product, you should evaluate your code to determine whether the complete list of vulnerabilities are applicable to your code. For a complete list of vulnerabilities please refer to the link for “IBM SDK for Java Security Bulletin" located in the “References” section for more information.

CVEID: CVE-2016-5573**
DESCRIPTION:** An unspecified vulnerability related to the VM component has high confidentiality impact, high integrity impact, and high availability impact.
CVSS Base Score: 8.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118070 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H)

CVEID: CVE-2016-5597**
DESCRIPTION:** An unspecified vulnerability related to the Networking component could allow a remote attacker to obtain sensitive information resulting in a high confidentiality impact using unknown attack vectors.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118071 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2016-5983**
DESCRIPTION:** IBM WebSphere Application Server could allow remote attackers to execute arbitrary Java code with a serialized object from untrusted sources.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/116468 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

This vulnerability affects all versions of Liberty for Java in IBM Bluemix up to and including v3.4.1.

Remediation/Fixes

To upgrade to Liberty for Java v3.5-20161114-1152 or higher, you must re-stage or re-push your application. To check which version of the Liberty for Java runtime your Bluemix application is using, navigate to the “Files” menu item for your application through the Bluemix UI. In the “logs” directory, check the “staging_task.log”.

You can also find this file through the command-line Cloud Foundry client by running the following command:

cf files <appname> logs/staging_task.log

You can see

-----> Liberty Buildpack Version: _________

To re-stage your application using the command-line Cloud Foundry client, use the following command:

cf restage <appname>

To re-push your application using the command-line Cloud Foundry client, use the following command:

cf push <appname>