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AUSCERT External Security Bulletin Redistribution
ESB-2019.1060.2
IBM Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect
Rational Directory Server (Tivoli) & Rational Directory Administrator
29 March 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM Rational Directory Server
Publisher: IBM
Operating System: Linux variants
Windows
Impact/Access: Modify Arbitrary Files -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2018-3180
Reference: ASB-2018.0290
ASB-2018.0256
ESB-2019.0960
ESB-2018.3260
ESB-2018.3258
ESB-2018.3164
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=ibm10875988
Revision History: March 29 2019: Updated ESB number
March 29 2019: Initial Release
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Multiple vulnerabilities in IBM Java Runtime affect Rational Directory Server
(Tivoli) & Rational Directory Administrator
Product: Rational Directory Server
Component: General Information
Software version: 5.2.1
Operating system(s): Linux, Windows
Reference #: 0875988
Security Bulletin
Summary
There are multiple vulnerabilities in IBM Runtime Environment Java Version 7
and Version 8 used by Rational Directory Server (Tivoli) and Rational Directory
Administrator. These issues were disclosed as part of the IBM Java SDK updates
in October 2018. Upgrade the JRE in order to resolve these issues.
Vulnerability Details
Rational Directory Server & Rational Directory Administrator are affected by
the following vulnerabilities:
CVEID: CVE-2018-3180
DESCRIPTION: An unspecified vulnerability related to the Java SE JSSE component
could allow an unauthenticated attacker to cause low confidentiality impact,
low integrity impact, and low availability impact.
CVSS Base Score: 5.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
151497 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:L/A:L)
If you run your own Java code using the IBM Java Runtime delivered with this
product, you should evaluate your code to determine whether additional Java
vulnerabilities are applicable to your code. For a complete list of
vulnerabilities, refer to the "IBM Java SDK Security Bulletin", located in the
References section for more information.
Affected Products and Versions
Rational Directory Server (Tivoli) v5.2.1 iFix 13 and earlier.
Rational Directory Administrator v6.0.0.2 iFix 06 and earlier.
Remediation/Fixes
1. Download one of the following IBM JRE versions that contain the fixes for
these vulnerabilities:
o IBM Java Runtime Environment, Version 7 R1 Service Refresh 4 Fix Pack 35
o IBM Java Runtime Environment, Version 8 Service Refresh 5 Fix Pack 25
2. After downloading a fixed IBM JRE version, refer the following technote for
JRE upgrade instructions:
o JRE Upgrade Instructions for Rational Directory Server (Tivoli) 5.2.1
o JRE Upgrade Instructions for Rational Directory Administrator 6.0.0.x
NOTE:
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.
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 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 had caused an issue.
In order to resolve the issue, Regenerate the RDS server certificate
(tdsserverkey.kdb) so that the certificate's subject name or certificate's
subject alternate name matches the RDS server hostname, by following
instructions from technote:
How can I generate my own 'tdsserverkey.kdb' keystore for TLSv12 communication
and use it in a IBM Rational Directory Server (Tivoli) deployment
After regenerating the RDS Server certificate matching with the RDS Server
Hostname, use FQDN's wherever applicable.
E.g. : RDA Login Screen, Creating RDS Partition and DOORS to RDS Connection.
For versions of Rational Directory Server that are earlier than version 5.2.1,
and Rational Directory Administrator versions earlier than 6.0.0.2, IBM
recommends upgrading to a fixed, supported version/release/platform of the
product.
Workarounds and Mitigations
None
Change History
26 March 2019: Initial Publication
*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.
Cross reference information
Product Component Platform Version Edition
Rational Directory General Linux, 6.0, 6.0.0.1,
Administrator Information Windows 6.0.0.2
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