ESB-2018.1051 - [Win] IBM Communications Server: Multiple vulnerabilities 2018-04-06

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1051
        Security Bulletin: IBM Communications Server for Windows is
                   affected by multiple vulnerabilities
                               6 April 2018

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

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

Product:           IBM Communications Server
Publisher:         IBM
Operating System:  Windows
Impact/Access:     Access Privileged Data   -- Existing Account      
                   Access Confidential Data -- Remote/Unauthenticated
                   Reduced Security         -- Existing Account      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1447 CVE-2018-1388 CVE-2016-0702

Reference:         ESB-2018.1050

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22015200

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

Security Bulletin: IBM Communications Server for Windows is affected by
multiple vulnerabilities

Security Bulletin

Document information

More support for: Communications Server for Windows
All

Software version: 6.1.3, 6.4, 6.4.0.1, 6.4.0.2, 6.4.0.3, 6.4.0.4

Operating system(s): Windows

Reference #: 2015200

Modified date: 05 April 2018

Summary

IBM Communications Server for Windows has addressed the following
vulnerabilities:
CVE-2018-1388 3RD PARTY GSKit V7 ROBOT Security Advisory
CVE-2016-0702 Side channel attack on modular exponentiation (CVE-2016-0702) in
GSKit
CVE-2018-1447 GSKit and GSKit-Crypto Security Advisory December 2017 Part 1

Vulnerability Details

CVEID: CVE-2018-1388
DESCRIPTION: GSKit V7 may disclose side channel information via discrepencies
between valid and invalid PKCS#1 padding.
CVSS Base Score: 9.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
138212 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
- -
CVEID: CVE-2016-0702
DESCRIPTION: OpenSSL could allow a local attacker to obtain sensitive
information, caused by a side-channel attack against a system based on the
Intel Sandy-Bridge microarchitecture. An attacker could exploit this
vulnerability to recover RSA keys.
CVSS Base Score: 2.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
111144 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
- -
CVEID: CVE-2018-1447
DESCRIPTION: The GSKit CMS KDB logic fails to salt the hash function resulting
in weaker than expected protection of passwords. A weak password may be
recovered. Note: After update the customer should change password to ensure
the new password is stored more securely. Products should encourage customers
to take this step as a high priority action.
CVSS Base Score: 5.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
139972 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

+-------------------------------------------------+-----------------+
| Affected IBM Communications Server for Windows  |Affected Versions|
+-------------------------------------------------+-----------------+
|Communications Server for Windows                |6.4.0            |
+-------------------------------------------------+-----------------+
|Communications Server for Windows                |6.1.3            |
+-------------------------------------------------+-----------------+

Remediation/Fixes

+------------------------------+--------------+--------+--------------------------------+
|           Product            |     VRMF     |  APAR  |    Remediation / First Fix     |
+------------------------------+--------------+--------+--------------------------------+
|                              |              |        |(6.4.0.7 or lower) Link to FIX  |
|                              |              |        |to update CSWIN to 6.4.0.8 with |
|Communications Server for     |6.4.0.7       |JR59019 |fix included                    |
|Windows                       |6.4.0.8       |        |                                |
|                              |              |        |(6.4.0.8) Link to FIX to apply  |
|                              |              |        |to existing CSWIN 6.4.0.8       |
+------------------------------+--------------+--------+--------------------------------+
|Communications Server for     |6.1.3.5       |JR59029 |Link to FIX                     |
|Windows                       |              |        |                                |
+------------------------------+--------------+--------+--------------------------------+

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

*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.

Product Alias/Synonym

Communications Server commserver comm server sna cswin cswindows

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