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ESB-2014.1288 - [Win] IBM General Parallel File System: Execute arbitrary code/commands - Remote/unauthenticated

Date: 01 August 2014
References: ESB-2014.2130  

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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2014.1288
         Security Bulletin: Vulnerability in Open Secure Shell for
                   GPFS V3.5 on Windows (CVE-2014-1692)
                               1 August 2014

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

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

Product:           IBM General Parallel File System
Publisher:         IBM
Operating System:  Windows
Impact/Access:     Execute Arbitrary Code/Commands -- Remote/Unauthenticated
                   Denial of Service               -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2014-1692  

Original Bulletin: 
   http://www-01.ibm.com/support/docview.wss?uid=isg3T1020637

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

Security Bulletin: Vulnerability in Open Secure Shell for GPFS V3.5 on
Windows (CVE-2014-1692)

Document information

More support for:
General Parallel File System

Software version:
3.5.0

Operating system(s):
Windows

Reference #:
T1020637

Modified date:
2014-07-16

Security Bulletin

Summary

A security vulnerability has been identified in the level of OpenSSH that
is currently shipped with GPFS V3.5.0.11, or later, on Windows. The current
level of OpenSSH could allow a remote attacker to execute arbitrary code
on the system to corrupt memory or cause a denial of service.

Vulnerability Details

CVE-2014-1692
OpenSSH could allow a remote attacker to execute arbitrary code on the
system, caused by the failure to initialize certain data structures by
the hash_buffer function in schnorr.c. An attacker could exploit this
vulnerability using unknown attack vectors to corrupt memory and execute
arbitrary code on the system or cause a denial of service.

CVSS Base Score: 7.5
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/90819 for the
current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P)

Affected Products and Versions

GPFS V3.5.0.11 or later levels of V3.5 on Windows.

Remediation/Fixes

In GPFS V3.5.0.19, IBM upgraded to OpenSSH-6.6p1 to address this
vulnerability. System administrators should update their systems to GPFS
V3.5.0.19, APAR IV60817 by following the steps below.

1. Download the GPFS 3.5.0.19 update package dated July
2014 into any directory on your system. From IBM at
http://www-933.ibm.com/support/fixcentral/swg/selectFixes?parent=Cluster%2Bsoftware&product=ibm/power/IBM+General+Parallel+File+System&release=3.5.0&platform=Windows&function=all

2. Extract the contents of the ZIP archive so that the .msi file it includes
is directly accessible to your system.

3. Follow the instructions in the README included in the update package
in order to install the OpenSSH msi package.

Workarounds and Mitigations

none

References
Complete CVSS Guide
On-line Calculator V2

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.

- --------------------------END INCLUDED TEXT--------------------

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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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