Summary

There is a potential information disclosure vulnerability in Global Name Management when using Enterprise Name Search. The information disclosure is due to an XML external entity (XXE) vulnerability. Customers not using Enterprise Name Search are not affected.

Vulnerability Details

CVEID: CVE-2019-4433
DESCRIPTION: IBM InfoSphere Global Name Management is vulnerable to an 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/162890> 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 InfoSphere Global Name Management 6.0

IBM InfoSphere Global Name Management 5.0

Remediation/Fixes

IBM Infosphere Global Name Management 6.0

To fix this vulnerability:

1. Create the file <ENS install root>/java/jre/lib/jaxp.properties . Typically there is already a file named jaxp.properties.sample in that directory, with all of its contents commented out. Copy that file to a file named jaxp.properties, or create an empty file with that name. Then append the following lines to the end of the file:

For security, do not allow external DTDs, schemas, or stylesheets

javax.xml.accessExternalDTD=“”
javax.xml.accessExternalSchema=“”
javax.xml.accessExternalStylesheet=“”

IBM Infosphere Global Name Management 5.0

To fix this vulnerability:

1. Download and install IBM Infosphere Global Name Management 5.0.0.1 iFix008 or greater from IBM Fix Central.