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             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.0895
          Security Bulletin: Vulnerability in OpenSSH affects IBM
                    DataPower Gateways (CVE-2017-15906)
                               28 March 2018

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

Product:           IBM DataPower Gateways
Publisher:         IBM
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Existing Account
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-15906  

Reference:         ESB-2018.0230

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22014534

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Security Bulletin: Vulnerability in OpenSSH affects IBM DataPower Gateways
(CVE-2017-15906)

CVE-2017-15906

Security Bulletin

Document information

More support for: IBM DataPower Gateways

Software version: 7.5.2, 7.6

Operating system(s): Firmware

Software edition: Edition Independent

Reference #: 2014534

Modified date: 27 March 2018

Summary

A potential Denial of Service vulnerability exists in OpenSSH. IBM DataPower
Gateways has addressed the applicable CVE.

Vulnerability Details

CVEID: CVE-2017-15906
DESCRIPTION: OpenSSH is vulnerable to a denial of service, caused by an error
in the process_open() function when in read-only mode. A remote authenticated
attacker could exploit this vulnerability to create zero-length files and cause
a denial of service.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/
133128 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

IBM DataPower Gateways appliances, versions 7.5.2.0-7.5.2.12, 7.6.0.0-7.6.0.5

Remediation/Fixes

Fix is available in versions 7.5.2.13 and 7.6.0.6. Refer to APAR IT24256 for
URLs to download the fix.
You should verify applying this fix does not cause any compatibility issues.

Workarounds and Mitigations

None

Additional Bluemix Alert Information

Monitor the Bluemix console (https://console.ng.bluemix.net/status/) for
additional important product alerts.

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

None

Change History

23 March 2017 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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