There is a potential XXE injection vulnerability in the Knowledge Center used by WebSphere Application Server.
DESCRIPTION: IBM WebSphere Application Server is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/152534 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L)
Affected Products and Versions
This vulnerability affects the following versions and releases of IBM WebSphere Application Server:
- Version 9.0
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 traditional:
For V184.108.40.206 through 220.127.116.11:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH04192
· Apply Fix Pack 18.104.22.168 or later.
Get Notified about Future Security Bulletins
IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk.
The vulnerability was reported to IBM by Benoit Côté-Jodoin from GoSecure
20 November 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.
19 February 2019