IBM Operational Decision Manager has addressed the vulnerability CVE-2018-1821
DESCRIPTION: IBM Operational Decision Manager 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/150170 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
- IBM Operational Decision Manager v8.6
- IBM Operational Decision Manager v8.7
- IBM Operational Decision Manager v8.8
- IBM Operational Decision Manager v8.9
Select the following interim fix to upgrade your installation of ODM based on your version of the product:
Interim fix for APAR RS03231 and RS03192 is available from IBM Fix Central:
IBM Operational Decision Manager v8.6: 18.104.22.168-WS-ODM_DS-IF035
IBM Operational Decision Manager v8.7: 22.214.171.124-WS-ODM_DS-IF079
IBM Operational Decision Manager v8.8: 126.96.36.199-WS-ODM_DS-IF090
IBM Operational Decision Manager v8.9: 188.8.131.52-WS-ODM_DS-IF004
For IBM WebSphere Operational Decision Management v7.1, v7.5, v8.0, v8.5 IBM recommends upgrading to a fixed supported version.
Workarounds and Mitigations
For v8.6 and v8.7 a context parameter has been added to HTDS Application descriptor to prevent vulnerability in the validation feature with JDK 1.6:
Edit the web.xml in the HTDS WAR file to change the property DisableInsecureXMLValidation as needed
<!-- Specify whether XML validation of requests is enabled for Java versions lower than 1.7.0
Possible values are : true, false
true : XML validation is disabled when Java version is before 1.7.0
false : XML validation is enabled, for all Java versions
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The vulnerability was reported to IBM by Mohamed M. Fouad of SecureMisr
Dec 11 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.
19 December 2018