ESB-2018.2308 - [Win][Linux][HP-UX][Solaris][AIX] IBM Rational ClearCase: Denial of service - Remote/unauthenticated 2018-08-10

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.2308
         Security Bulletin: Vulnerabilities in OpenSSL affect IBM
                    Rational ClearCase (CVE-2018-0739)
                              10 August 2018

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

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

Product:           IBM Rational ClearCase
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-0739  

Reference:         ASB-2018.0180
                   ASB-2018.0177
                   ASB-2018.0172
                   ASB-2018.0171
                   ASB-2018.0164
                   ASB-2018.0162
                   ESB-2018.2167
                   ESB-2018.2121
                   ESB-2018.2071

Original Bulletin: 
   https://www-01.ibm.com/support/docview.wss?uid=ibm10717211

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: Vulnerabilities in OpenSSL affect IBM Rational ClearCase
(CVE-2018-0739)

Document information
More support for: Rational ClearCase
Software version: 8.0, 8.0.0.1, 8.0.0.2, 8.0.0.3, 8.0.0.4, 8.0.0.5, 8.0.0.6, 8.0.0.7, 8.0.0.8, 8.0.0.9, 8.0.0.10, 8.0.0.11, 8.0.0.12, 8.0.0.13, 8.0.0.14, 8.0.0.15, 8.0.0.16, 8.0.0.17, 8.0.0.18, 8.0.0.19, 8.0.0.20, 8.0.0.21, 8.0.1, 8.0.1.1, 8.0.1.2, 8.0.1.3, 8.0.1.4, 8.0.1.5, 8.0.1.6, 8.0.1.7, 8.0.1.8, 8.0.1.9, 8.0.1.10, 8.0.1.11, 8.0.1.12, 8.0.1.13, 8.0.1.14, 8.0.1.15, 8.0.1.16, 8.0.1.17, 9.0, 9.0.0.1, 9.0.0.2, 9.0.0.3, 9.0.0.4, 9.0.0.5, 9.0.0.6, 9.0.1, 9.0.1.1, 9.0.1.2, 9.0.1.3

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows

Reference #: 0717211

Modified date: 09 August 2018

Security Bulletin

Summary

OpenSSL vulnerabilities were disclosed on March 27 2018 by the OpenSSL Project.
OpenSSL is used by IBM Rational ClearCase. IBM Rational ClearCase has addressed
the applicable CVE.

Vulnerability Details

CVEID: CVE-2018-0739
DESCRIPTION: OpenSSL is vulnerable to a denial of service. By sending specially
crafted ASN.1 data with a recursive definition, a remote attacker could exploit
this vulnerability to consume excessive stack memory.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
140847 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

IBM Rational ClearCase versions:


+----------------------------------------+------------------------------------+
|                Version                 |               Status               |
+----------------------------------------+------------------------------------+
|         9.0.1 through 9.0.1.3          |              Affected              |
+----------------------------------------+------------------------------------+
|          9.0 through 9.0.0.6           |              Affected              |
+----------------------------------------+------------------------------------+
|         8.0.1 through 8.0.1.17         |              Affected              |
+----------------------------------------+------------------------------------+
|          8.0 through 8.0.0.21          |              Affected              |
+----------------------------------------+------------------------------------+


Not all deployments of Rational ClearCase use OpenSSL in a way that is affected
by these vulnerabilities.

You are vulnerable if your use of Rational ClearCase includes any of these
configurations:

 1. You use the base ClearCase/ClearQuest integration client on any platform,
    configured to use SSL to communicate with a ClearQuest server.
 2. You use the UCM/ClearQuest integration on UNIX/Linux clients, configured to
    use SSL to communicate with a ClearQuest server.
    Note: Windows clients using the UCM/ClearQuest integration are not
    vulnerable.
 3. On UNIX/Linux clients, you use the Change Management Integration (CMI),
    when configured to use SSL to communicate with the server.
    Note: Windows clients using the CMI integration are not vulnerable.
 4. You use ratlperl, ccperl, or cqperl to run your own perl scripts, and those
    scripts use SSL connections.

Remediation/Fixes

Apply a fix pack as listed in the table below. The fix pack includes OpenSSL
1.0.2o.


+-------------------+---------------------------------------------------------+
| Affected Versions |                    Applying the fix                     |
+-------------------+---------------------------------------------------------+
|   9.0.1 through   |Install Rational ClearCase Fix Pack 4 (9.0.1.4) for 9.0.1|
|      9.0.1.3      |                                                         |
|9.0 through 9.0.0.6|                                                         |
+-------------------+---------------------------------------------------------+
|   8.0.1 through   |Install Rational ClearCase Fix Pack 18 (8.0.1.18) for    |
|     8.0.1.17      |8.0.1                                                    |
|    8.0 through    |                                                         |
|     8.0.0.21      |                                                         |
+-------------------+---------------------------------------------------------+

For 7.0.x, 7.1.x, 8.0.x and earlier releases, IBM recommends upgrading to a
fixed, supported version/release/platform of the product.

Workarounds and Mitigations

None.


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.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

OpenSSL Project vulnerability website

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

9 August 2018: Original version 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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