There is a man in the middle vulnerability in WebSphere Application Server Liberty. This vulnerability has been addressed.
DESCRIPTION: Shibboleth Identity Provider (IdP) and OpenSAML Java could allow a remote attacker to conduct spoofing attacks, caused by the failure to verify that the server hostname matches a domain name in the subject''s Common Name (CN) or subjectAltName field of the X.509 certificate. A man-in-the-middle attacker could exploit this vulnerability using an arbitrary valid certificate.to spoof SSL servers.
CVSS Base Score: 6.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/164271 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N)
Affected Products and Versions
These vulnerabilities affect the following versions and releases of IBM WebSphere Application Server:
The recommended solution is to apply the interim fix, Fix Pack or PTF containing the APAR for each named product as soon as practical.
For WebSphere Application Server Liberty using wsSecurity-1.1 or samlWeb-2.0 feature:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH17678
· Apply Fix Pack 22.214.171.124 or later (targeted availability 4Q2019).
Get Notified about Future Security Bulletins
29 October 2019: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.
29 October 2019