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Security Bulletin: Reuse of Source Port in DataPower DNS queries (CVE-2017-1773)

Security Bulletin


IBM DataPower Gateway may re-use the source port in DNS lookups. IBM has addressed the applicable CVE

Vulnerability Details

Relevant CVE Information:

CVEID: CVE-2017-1773
IBM WebSphere DataPower Appliances could allow an attacker using man-in-the-middle techniques to spoof DNS responses to perform DNS cache poisoning and redirect Internet traffic.
CVSS Base Score: 3.7
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

DataPower versions,,,, and


Fix is available in versions,,,,, Refer to APAR IT23417 for URLs to download the fix.

Workarounds and Mitigations


Additional Bluemix Alert Information

Monitor the Bluemix console ( for additional important product alerts.


Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

January 31 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.


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.

Document information

More support for: IBM DataPower Gateways

Software version: 7.1, 7.2, 7.5, 7.5.1, 7.5.2, 7.6

Operating system(s): Firmware

Software edition: Edition Independent

Reference #: 2012758

Modified date: 30 January 2018