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             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.1074
Security Bulletin: Multiple vulnerabilities in Network Time Protocol (NTP)
                 affect WebSphere DataPower XC10 Appliance
                                1 May 2017

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

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

Product:           IBM WebSphere DataPower XC10 Appliance
Publisher:         IBM
Operating System:  Network Appliance
Impact/Access:     Denial of Service -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2016-9311 CVE-2016-9310 CVE-2016-7433
                   CVE-2016-7429 CVE-2016-7426 

Reference:         ESB-2017.1061
                   ESB-2017.0710
                   ESB-2017.0591

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=swg22001667

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Security Bulletin: Multiple vulnerabilities in Network Time Protocol (NTP) 
affect WebSphere DataPower XC10 Appliance

Document information

More support for: WebSphere DataPower XC10 Appliance

General

Software version: 2.1, 2.5

Operating system(s): Firmware

Reference #: 2001667

Modified date: 28 April 2017

Security Bulletin

Summary

There are multiple vulnerabilities in Network Time Protocol (NTP) 
implementation that is used by WebSphere DataPower XC10 Appliance. These 
vulnerabilities addressed include the ability to crash application and disable
ntp service.

Vulnerability Details

CVEID: CVE-2016-7426

DESCRIPTION: NTP is vulnerable to a denial of service, caused by the improper
handling of invalid server responses. By sending specially crafted packets 
with spoofed source address, a remote attacker could exploit this 
vulnerability to a denial of service.

CVSS Base Score: 1.6

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/119094 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-7433

DESCRIPTION: NTP is vulnerable to a denial of service, caused by the inclusion
of the root delay allowing for an incorrect root distance calculation. An 
attacker could exploit this vulnerability to cause a denial of service.

CVSS Base Score: 1.6

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/119095 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2016-9310

DESCRIPTION: NTP is vulnerable to a denial of service, caused by an error in 
the control mode (mode 6) functionality. By sending specially crafted control
mode packets, a remote attacker could exploit this vulnerability to obtain 
sensitive information and cause the application to crash.

CVSS Base Score: 6.5

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/119087 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)

CVEID: CVE-2016-9311

DESCRIPTION: NTP is vulnerable to a denial of service, caused by a NULL 
pointer dereference when trap service has been enabled. By sending specially 
crafted packets, a remote attacker could exploit this vulnerability to cause 
the application to crash.

CVSS Base Score: 4.4

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/119086 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H)

CVEID: CVE-2016-7429

DESCRIPTION: NTP is vulnerable to a denial of service, caused by an attack on
interface selection. By sending specially crafted packets with spoofed source
address, a physical attacker could exploit this vulnerability to cause a 
denial of service.

CVSS Base Score: 1.6

CVSS Temporal Score: See 
https://exchange.xforce.ibmcloud.com/vulnerabilities/119093 for the current 
score

CVSS Environmental Score*: Undefined

CVSS Vector: (CVSS:3.0/AV:P/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L)

Affected Products and Versions

WebSphere DataPower XC10 Appliance Version 2.1

WebSphere DataPower XC10 Appliance Version 2.5

Remediation/Fixes

Apply an interim fix, according to the table below. Interim fixes are 
associated with the original APAR that is documented in the table. Because 
these APAR references might be updated to more recent APARs, see the links in
the table for the most recent interim fix information.

Product 							Version 		APAR 		Link to interim fix

WebSphere DataPower XC10 Appliance V2.1 on appliance 9235-92X 	2.1 			IT19817 	Refer to the Version 2.1 table in Recommended fixes for WebSphere DataPower XC10 Appliance.

WebSphere DataPower XC10 Appliance V2.1 on appliance 7199-92X 	2.1 			IT19817		Refer to the Version 2.1 table in Recommended fixes for WebSphere DataPower XC10 Appliance.

WebSphere DataPower XC10 Appliance V2.5 on appliance 7199-92X 	Version 2.5		IT19817 	Refer to the Version 2.5 table in Recommended fixes for WebSphere DataPower XC10 Appliance.

								Important: See More 
								information link and 
								follow instructions to 
								determine if you have 
								an old or newer SSD 
								driver on your 
								appliance using the 
								show ssd-version 
								command. 

WebSphere DataPower XC10 Appliance V2.5 virtual image 		2.5 			IT19817 	Refer to the Version 2.5 table in Recommended fixes for WebSphere DataPower XC10 Appliance.

Workarounds and Mitigations

None

Get Notified about Future Security Bulletins

Subscribe to My Notifications to be notified of important product support 
alerts like this.

References

Complete CVSS v3 Guide

On-line Calculator v3

Related information

IBM Secure Engineering Web Portal

IBM Product Security Incident Response Blog

Change History

30 April 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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