ESB-2018.1050 - [Linux][AIX] IBM Communications Server: Reduced security - Existing account 2018-04-06

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.1050
 Security Bulletin: IBM Communications Server for Data Center Deployment,
IBM Communications Server for AIX, IBM Communications Server for Linux, and
       IBM Communications Server for Linux on System z are affected
                            by a vulnerability.
                               6 April 2018

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

Product:           IBM Communications Server
Publisher:         IBM
Operating System:  AIX
                   Linux variants
Impact/Access:     Reduced Security -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1447  

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22013978

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Security Bulletin: IBM Communications Server for Data Center Deployment, IBM
Communications Server for AIX, IBM Communications Server for Linux, and IBM
Communications Server for Linux on System z are affected by a vulnerability.

Security Bulletin

Document information

More support for: Communications Server for Data Center Deployment
All

Software version: 7.0.0.0

Operating system(s): AIX, Linux

Reference #: 2013978

Modified date: 05 April 2018

Summary

IBM Communications Server for Data Center Deployment, IBM Communications
Server for AIX, IBM Communications Server for Linux, and IBM Communications
Server for Linux on System z have addressed the following vulnerability:
CVE-2018-1447 GSKit and GSKit-Crypto Security Advisory December 2017 Part 1

Vulnerability Details

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 Linux & CS for Linux on System|Affected Versions|
|                                  z                                  |                 |
+---------------------------------------------------------------------+-----------------+
|Communications Server for Data Center Deployment                     |700              |
+---------------------------------------------------------------------+-----------------+
|Communications Server for AIX                                        |640              |
+---------------------------------------------------------------------+-----------------+
|Communications Server for Linux                                      |640              |
+---------------------------------------------------------------------+-----------------+
|Communications Server for Linux on System z                          |640              |
+---------------------------------------------------------------------+-----------------+

Remediation/Fixes

+---------------------------------+-------------+--------+-----------------------------+
|             Product             |    VRMF     |  APAR  |   Remediation / First Fix   |
+---------------------------------+-------------+--------+-----------------------------+
|Communications Server for Data   |7.0.0.4      |(AIX)   |(AIX) Link to FIX            |
|Center Deployment                |             |IJ03789 |(LINUX)                      |
|                                 |             |(LINUX) |Link to FIX on i686          |
|                                 |             |LI79870 |Link to FIX on x86_64        |
|                                 |             |        |Link to FIX on ppc           |
|                                 |             |        |Link to FIX on s390x         |
+---------------------------------+-------------+--------+-----------------------------+
|Communications Server for AIX    |6.4.0.7      |IJ03797 |Link to FIX                  |
+---------------------------------+-------------+--------+-----------------------------+
|                                 |             |        |Link to FIX on i686          |
|Communications Server for Linux  |6.4.0.7      |LI79880 |Link to FIX on x86_64        |
|                                 |             |        |Link to FIX on ppc           |
+---------------------------------+-------------+--------+-----------------------------+
|Communications Server for Linux  |6.4.0.7      |LI79891 |Link to FIX                  |
|on System z                      |             |        |                             |
+---------------------------------+-------------+--------+-----------------------------+

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.

                         Cross reference information
 Segment        Product       Component Platform        Version        Edition
           Communications                        6.4, 6.4.0.1,
Networking Server for AIX     All       AIX      6.4.0.2, 6.4.0.3,
                                                 6.4.0.4, 7.0.0.0
           Communications                        6.4, 6.4.0.1,
Networking Server for Linux   All       Linux    6.4.0.2, 6.4.0.3,
                                                 6.4.0.4, 7.0.0.0
           Communications                        6.4, 6.4.0.1,
Networking Server for Linux   All       Linux    6.4.0.2, 6.4.0.3,
           on zSeries                            6.4.0.4, 7.0.0.0
           Communications                        6.1.3, 6.4, 6.4.0.1,
Networking Server for Windows All       Windows  6.4.0.2, 6.4.0.3,
                                                 6.4.0.4

Product Alias/Synonym

Communications Server commserver comm server sna csaix cslinux

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