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Security Bulletin: Multiple Vulnerabilities in IBM® Java SDK affect WebSphere Application Server July 2018 CPU

Security Bulletin


Summary

There are multiple vulnerabilities in the IBM® SDK Java™ 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 18.0.0.2. 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.

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:

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

OR

  • 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:

  • 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
  • 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
  • Upgrade to IBM SDK, Java Technology Edition Version 7R1  SR4 FP30 or IBM SDK, Java Technology Edition Version 8 SR5 FP20, please refer to IBM Java SDKs for Liberty

For Version 9 WebSphere Application Server Traditional:

Update to the IBM SDK, Java Technology Edition, Version 8 Service Refresh 5 FP20 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

  • Upgrade to WebSphere Application Server Traditional Fix Pack 8.5.5.9 or later 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
  • Upgrade to WebSphere Application Server Traditional Fix Pack 8.5.5.9 or later 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
  • Upgrade to WebSphere Application Server Traditional Fix Pack 8.5.5.9 or later 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
  • 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
  • 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--
  • Apply IBM Java SDK shipped with WebSphere Application Server Fix pack 15 (8.5.5.15) or later.

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 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 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.

Get Notified about Future Security Bulletins

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.

References

Off

Change History

28 August 2018: original document published
18 October 2018: remove need for APAR PI97281

*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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Document Information

Modified date:
06 March 2019

UID

ibm10729349