ESB-2018.0337 - [Win][Linux][IBM i][HP-UX][Solaris][AIX] IBM WebSphere MQ: Access privileged data - Remote/unauthenticated 2018-02-02

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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0337
 Security Bulletin: WebSphere MQ is vulnerable to disclosing side channel
          information via discrepencies between valid and invalid
                  PKCS#1 padding. ROBOT. (CVE-2018-1388)
                              2 February 2018

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

Product:           IBM WebSphere MQ
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   IBM i
                   Linux variants
                   Solaris
                   Windows
Impact/Access:     Access Privileged Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2018-1388  

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22013022

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Security Bulletin: WebSphere MQ is vulnerable to disclosing side channel
information via discrepencies between valid and invalid PKCS#1 padding. ROBOT.
(CVE-2018-1388)


Document information

More support for: WebSphere MQ
SSL

Software version: 7.0.1, 7.0.1.1, 7.0.1.2, 7.0.1.3, 7.0.1.4, 7.0.1.5, 7.0.1.6,
7.0.1.7, 7.0.1.8, 7.0.1.9, 7.0.1.10, 7.0.1.11, 7.0.1.12, 7.0.1.13, 7.0.1.14

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

Software edition: All Editions

Reference #: 2013022

Modified date: 01 February 2018


Summary

WebSphere MQ is affected by the ROBOT vulnerability where it may disclose side
channel information via discrepencies between valid and invalid PKCS#1 padding.


Vulnerability Details

CVEID: CVE-2018-1388

DESCRIPTION: IBM MQ is vulnerable to TLS implementations 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)


Affected Products and Versions

WebSphere MQ v7.0.1

    Maintenance levels 7.0.1.0 - 7.0.1.14


Remediation/Fixes

WebSphere MQ v7.0.1
Contact WebSphere MQ support requesting a fix for APAR IJ03658


Workarounds and Mitigations

WebSphere MQ v7.0.1
Use the Alternative GSKit value to configure your Queue Manager to use GSKit
version 8.


Change History

01 Feb 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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