ESB-2018.2555 - [Win][Linux][IBM i][HP-UX][Solaris][AIX] IBM WebSphere Application Server: Multiple vulnerabilities 2018-08-29

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2555
            Multiple Vulnerabilities in IBM(R) Java SDK affects
                WebSphere Application Server July 2018 CPU
                              29 August 2018

===========================================================================

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

Product:           IBM WebSphere Application Server
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Solaris
                   IBM i
                   Linux variants
                   Windows
                   z/OS
Impact/Access:     Execute Arbitrary Code/Commands -- Existing Account            
                   Increased Privileges            -- Existing Account            
                   Modify Arbitrary Files          -- Remote with User Interaction
                   Create Arbitrary Files          -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-12539 CVE-2018-1656 

Reference:         ESB-2018.2529.2
                   ESB-2018.2528.2

Original Bulletin: 
   https://www.ibm.com/support/docview.wss?uid=ibm10729349

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Security Bulletin: Multiple Vulnerabilities in IBM(R) Java SDK affects WebSphere
Application Server July 2018 CPU

Software version: All Versions

Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS

Software edition: Advanced, Base, Developer, Enterprise, Express, Liberty,
Network Deployment, Single Server

Reference #: 0729349

Modified date: 28 August 2018

Security Bulletin

Summary

There are multiple vulnerabilities in the IBM(R) SDK Java(TM) Technology Edition
that is shipped with IBM WebSphere Application Server. These issues were
disclosed as part of the IBM Java SDK updates in July 2018. 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

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.
HP fixes are on a delayed schedule.

CVEID:   CVE-2018-1656
DESCRIPTION:   The IBM Java Runtime Environment's Diagnostic Tooling Framework
for Java (DTFJ) does not protect against path traversal attacks when extracting
compressed dump files.
CVSS Base Score: 7.4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/144882  for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N)

CVEID:  CVE-2018-12539
DESCRIPTION:  Eclipse OpenJ9 could allow a local attacker to gain elevated
privileges on the system, caused by the failure to restrict the use of Java
Attach API to connect to an Eclipse OpenJ9 or IBM JVM on the same machine and
use Attach API operations to only the process owner. An attacker could exploit
this vulnerability to execute untrusted native code and gain elevated
privileges on the system.
CVSS Base Score: 8.4
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/148389  for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM SDK, Java Technology Editions shipped with WebSphere Application Server
Liberty through 18.0.0.12. IBM SDK, Java Technology Editions shipped with IBM
WebSphere Application Server Traditional Version 9.0.0.0 through 9.0.0.8,
8.5.0.0 through 8.5.5.14, Version 8.0.0.0 through 8.0.0.15, Version 7.0.0.0
through 7.0.0.45.

  o This does not occur on IBM SDK, Java Technology Editions that are shipped
    with WebSphere Application Server Fix Packs 18.0.0.3,  9.0.0.9, 8.5.5.15 or
    later.

Remediation/Fixes

Download and apply the interim fix APARs below, for your appropriate release

NOTE:   The July update added Endpoint identification enabled on LDAPS
connections.
To improve the robustness of LDAPS (secure LDAP over TLS ) connections,
endpoint identification algorithms have been enabled by default.  There may be
situations where some applications that were previously able to successfully
connect to an LDAPS server may no longer be able to do so. Such applications
may, if they deem appropriate, disable endpoint identification using a new
system property: com.sun.jndi.ldap.object.disableEndpointIdentification.
Define this system property (or set it to true) to disable endpoint
identification algorithms.

This javax.net.ssl.SSLHandshakeException:
java.security.cert.CertificateException connecting to a LDAP server is not a
Java Security issue.  With this LDAP update, LDAP is asking JSSE to validate
the LDAP server's certificate to ensure it is compliant with hostname
verification.  With this change, if the server's certificate is not compliant,
then the exception will be thrown.  In the past, LDAP did not request JSSE to
perform hostname verification and a non-compliant server certificate would not
have been caused an issue.

In order to resolve the issue either:

  o Regenerate the LDAP server certificate so that the certificate's subject
    alternate name or certificate's subject name matches the LDAP server.

OR

  o Disable endpoint identification by setting the system property
    com.sun.jndi.ldap.object.disableEndpointIdentification=true

For the IBM Java SDK updates:

For WebSphere Application Server Liberty:
For the IBM SDK, Java Technology Version that you use, upgrade to WebSphere
Application Server Liberty Fix Packs as noted below or later fix pack level and
apply one of the interim fixes below:

  o Upgrade to WebSphere Application Server Liberty Fix Pack 8.5.5.1 or later
    then apply Interim Fix PH00181: Will upgrade you to IBM SDK, Java
    Technology Edition, Version 6R1 Service Refresh 8 Fix Pack 70
  o Upgrade to WebSphere Application Server Liberty Fix Pack 8.5.5.1 or later
    then apply Interim Fix PH00178: Will upgrade you to IBM SDK, Java
    Technology Edition, Version 7 Service Refresh 10 FP30
  o For IBM SDK, Java Technology Edition Version 7R1 and IBM SDK, Java
    Technology Edition Version 8, please refer to IBM Java SDKs for Liberty
    --OR--
  o Apply IBM Java SDK shipped with WebSphere Application Server Liberty
    (18.0.0.3) or later (targeted availability 3Q2018).

For Version 9 WebSphere Application Server Traditional:

Update the IBM SDK, Java Technology Edition using the instructions in the IBM
Knowledge Center Installing and updating IBM SDK, Java Technology Edition on
distributed environments then use the IBM Installation manager to access the
online product repositories to install the SDK or use IBM Installation manager
and access the packages from Fixcentral .


For V8.5.0.0 through 8.5.5.14 WebSphere Application Server Traditional and
WebSphere Application Server Hypervisor Edition:

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.

For the IBM SDK, Java Technology Version that you use, upgrade to WebSphere
Application Server Fix Packs as noted below or later fix pack level and apply
the interim fixes as noted below:

For IBM SDK Java Technology Edition Version 6R1

  o Apply Interim Fix PI97281  (if not already applied) or upgrade to IBM
    WebSphere Application Server 8.5.5.14
  o Then apply Interim Fix PH00179 : Will upgrade you to IBM SDK, Java
    Technology Edition, Version 6R1 Service Refresh 8 Fix Pack 70


For IBM SDK Java Technology Edition Version 7

  o Apply Interim Fix PI97281 (if not already applied) or upgrade to IBM
    WebSphere Application Server 8.5.5.14
  o Then apply Interim Fix PH00178 : Will upgrade you to IBM SDK, Java
    Technology Edition, Version 7 Service Refresh 10 FP30


For IBM SDK Java Technology Edition Version 7R1

  o Apply Interim Fix PI97281 (if not already applied) or upgrade to IBM
    WebSphere Application Server 8.5.5.14
  o Then apply Interim Fix PH00177 : Will upgrade you to IBM SDK, Java
    Technology Edition, Version 7R1 Service Refresh 4 FP30


For IBM SDK Java Technology Edition Version 8

  o Upgrade to WebSphere Application Server Traditional Fix Pack 8.5.5.9 or
    later then apply Interim Fix PH00173: Will upgrade you to IBM SDK, Java
    Technology Edition, Version 8 Service Refresh 5 FP20
  o For environnments that have been upgraded to use the new default IBM SDK
    Version 8 bundled with WebSphere Application Server Fix Pack 8.5.5.11 or
    later: Apply Interim Fix PH00176: Will upgrade you to IBM SDK, Java
    Technology Edition, Version 8 Service Refresh 5 FP20

- --OR--

  o Apply IBM Java SDK shipped with WebSphere Application Server Fix pack 15
    (8.5.5.15) or later (targeted availability 1Q 2019).


For V8.0.0.0 through 8.0.0.15 WebSphere Application Server and WebSphere
Application Server Hypervisor Edition:

Upgrade to WebSphere Application Server Fix Pack 8.0.0.14 or later then apply
the interim fixes below:

  o Apply Interim Fix PI97281   (if not already applied)
  o Then apply Interim Fix PH00183 : Will upgrade you to IBM SDK, Java
    Technology Edition, Version 6R1 Service Refresh 8 Fix Pack 70


For V7.0.0.0 through 7.0.0.45 WebSphere Application Server and WebSphere
Application Server Hypervisor Edition:

Upgrade to WebSphere Application Server Fix Pack 7.0.0.43 or later then apply
the interim fix below:

  o Apply Interim Fix PI97281  (if not already applied)
  o Then apply Interim Fix PH00185 : Will upgrade you to IBM SDK, Java
    Technology Edition, Version 6 Service Refresh 16 Fix Pack 70


WebSphere Application Server V7 and V8 are no longer in full support; IBM
recommends upgrading to a fixed, supported version/release/platform of the
product.

Important Note

IBM strongly suggests that all System z customers be subscribed to the System z
Security Portal to receive the latest critical System z security and integrity
service. If you are not subscribed, see the instructions on the System z
Security web site. Security and integrity APARs and associated fixes will be
posted to this portal. IBM suggests reviewing the CVSS scores and applying all
security or integrity fixes as soon as possible to minimize any potential risk.

Change History

28 August 2018: 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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