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Security Bulletin: Multiple vulnerabilities in IBM Java Runtime affect IBM Rational ClearCase (CVE-2018-3180, CVE-2018-3139)

Security Bulletin


There are multiple vulnerabilities in IBM® Runtime Environment Java™ Versions 6, 7, and 8, which are used by IBM Rational ClearCase. These issues were disclosed as part of the IBM Java SDK updates in October 2018.

Vulnerability Details

CVEID:  CVE-2018-3180
A flaw in the JSSE component means that TLS connections do not always check the validity of the hostname on the server-side certificate.
The fix ensures that server-side certificates are checked correctly.
CVSS Base Score: 5.6
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector:

CVEID: CVE-2018-3139
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: 3.1
CVSS Temporal Score: See for more information
CVSS Environmental Score*: Undefined
CVSS Vector:

Affected Products and Versions

IBM Rational ClearCase version 8 and 9 in the following components:

  • CCRC WAN server/CM Server component, when configured to use SSL
  • ClearCase remote client: CCRC/CTE GUI, rcleartool, and CMAPI clients
ClearCase version
9.0.1 through
9.0 through
8.0 through Affected
8.0.1 through Affected


The solution is to install a fix that includes an updated Java™ Virtual Machine with fixes for the issues, and to apply fixes for WebSphere Application Server (WAS).

Client and server fixes

  • Apply the relevant fixes as listed in the table below.
    Affected Versions
    Applying the fix
    9.0.1 through
    9.0 through
    Install Rational ClearCase Fix Pack 6 ( for 9.0.1

    8.0.1 through
    8.0 through

    Install Rational ClearCase Fix Pack 20 ( for 8.0.1
    For 8.0 and earlier releases, IBM recommends upgrading to a fixed, supported version/release/platform of the product.
    • If you use CCRC as an extension offering installed into an Eclipse shell (one not provided as part of a ClearCase release), or you use rcleartool or CMAPI using a Java™ Virtual Machine not supplied by IBM as part of Rational ClearCase, you should update the Java™ Virtual Machine that you use to include a fix for the above issues. Contact the supplier of your Java™ Virtual Machine and/or the supplier of your Eclipse shell.
    • There is no Java™ Virtual Machine fix for HP-UX available in ClearCase Please see for more details.
    • For ClearCase version 8.0.x: IBM highly recommends moving to the most current version of ClearCase (using Java V8) due to potential security risks. Oracle's Extended Support for Java 6 ended in December 2018, and there will be no further new fixes, including security fixes, made available for that Java version. Please see this link for more information: This is the last fixpack for 8.0.1.x that will have Java updates.

CCRC WAN server fixes

Affected Versions
Applying the fix
Apply the appropriate WebSphere Application Server fix directly to your CCRC WAN server host. No ClearCase-specific steps are necessary.
    1. Determine the WAS version used by your CCRC WAN server. Navigate to the CCRC profile directory (either the profile you specified when installing ClearCase, or <ccase-home>/common/ccrcprofile), then execute the script: bin/ (UNIX) or bin\versionInfo.bat (Windows). The output includes a section "IBM WebSphere Application Server". Make note of the version listed in this section.
    2. Review the following WAS security bulletin:

      Security Bulletin: Multiple vulnerabilities in IBM® Java SDK affects WebSphere Application Server October 2018 CPU

      and apply the latest available fix for the version of WAS used for CCRC WAN server.
    • Note: there may be newer security fixes for WebSphere Application Server. Follow the link below (in the section "Get Notified about Future Security Bulletins") to subscribe to WebSphere product support alerts for additional Java SDK fixes.

Workarounds and Mitigations


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.



*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.


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:
21 March 2019