ESB-2019.1242 - [Linux] WebSphere Application Server in IBM Cloud: Multiple vulnerabilities 2019-04-11

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2019.1242
  IBM Security Bulletin: Multiple vulnerabilities in IBM Java SDK affects
        WebSphere Application Server in IBM Cloud January 2019 CPU
                               11 April 2019

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        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           WebSphere Application Server in IBM Cloud
Publisher:         IBM
Operating System:  Linux variants
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
                   Access Confidential Data        -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2019-2426 CVE-2018-12547 

Reference:         ASB-2019.0018
                   ESB-2019.1223
                   ESB-2019.0263
                   ESB-2019.0262

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10874748

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Multiple vulnerabilities in IBM® Java SDK affects WebSphere Application Server
in IBM Cloud January 2019 CPU

Product:             WebSphere Application Server in IBM Cloud

Software version:    All Versions

Operating system(s): Linux

Reference #:         0874748

Security Bulletin

Summary

There are multiple vulnerabiltities in the IBM SDK Java Technology Edition that
is shipped with IBM WebSphere Application Server. These issues were disclosed
in the IBM Java SDK updates in January 2019. These may affect some
configurations of IBM WebSphere Application Server Traditional, IBM WebSphere
Application Server Liberty and IBM WebSphere Application Server Hypervisor
Edition.

Vulnerability Details

For information on the IBM Java SDK that is now bundled with WebSphere
Application Server Version 8.5.5 refer to the Knowledge Center link in the
References section.

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 Java SDK Security Bulletin"
located in the References section for more information.

CVEID: CVE-2019-2426
DESCRIPTION: An unspecified vulnerability related to the Java SE Networking
component could allow an unauthenticated attacker to obtain sensitive
information resulting in a low confidentiality impact using unknown attack
vectors.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
155744 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID: CVE-2018-12547
DESCRIPTION: Eclipse OpenJ9 is vulnerable to a buffer overflow, caused by
improper bounds checking by the jio_snprintf()and jio_vsnprintf() functions. By
sending an overly long argument, a remote attacker could overflow a buffer and
execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 9.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
157512 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM WebSphere
Application Server:
Liberty
Version 9.0
Version 8.5

Remediation/Fixes

To patch an existing service instance refer to the IBM WebSphere Application
Server bulletinlisted below:

  o Security Bulletin: Multiple Vulnerabilities in IBM Java SDK affects
    WebSphere Application Server January 2019 CPU

Please see Updating your environment in the KnowlegeCenter for information on
applying service.

Alternatively, delete the vulnerable service instance and create a new
instance.

Workarounds and Mitigations

None

Additional Bluemix Alert Information

Monitor the Bluemix console ( https://console.ng.bluemix.net/status/ ) for
additional important product alerts.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

IBM Java SDK Security Bulletin

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

09 April 2019 - Original document 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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