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Security Bulletin: Potential MITM attack in Apache CXF used by WebSphere Application Server (CVE-2018-8039)

Security Bulletin


There is a potential man-in-the-middle attack in Apache CXF used by WebSphere Application Server (CVE-2018-8039)

Vulnerability Details

CVEID: CVE-2018-8039
DESCRIPTION: Apache CXF could allow a remote attacker to conduct a man-in-the-middle attack. The TLS hostname verification does not work correctly with interface. An attacker could exploit this vulnerability to launch a man-in-the-middle attack.
CVSS Base Score: 7.5
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

This vulnerability affects the following versions and releases of IBM WebSphere Application Server:

  • WebSphere Application Server Liberty
  • WebSphere Application Server Version 9.0


The recommended solution is to apply the interim fix, Fix Pack or PTF for each named product as soon as practical.  There is not an issue with JAX-WS in WebSphere Application Server Traditional.

For WebSphere Application Server Liberty using JAX-RS or JAX-WS:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH00401 for JAX-WS and PH01221 for JAX-RS
· Apply Fix Pack or later.

For WebSphere Application Server traditional  using JAX-RS:
For V9.0.0.0 through
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH01221
· Apply Fix Pack or later.

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Change History

20 September 2018: original document 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.

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0","Edition":"Advanced;Base;Developer;Enterprise;Express;Network Deployment;Single Server;Liberty","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
20 September 2018