Security Bulletin: IBM InfoSphere Information Server has a network layer security vulnerability

Summary

A network layer security vulnerability in InfoSphere Information Server can lead to privilege escalation or unauthorized access.

An unauthorized user could intercept and view communication between client and server. They could also modify or replay certain DataStage commands to get unauthenticated access to the server.

Vulnerability Details

CVEID: CVE-2017-1467 DESCRIPTION: A network layer security vulnerability in InfoSphere Information Server can lead to privilege escalation or unauthorized access.
CVSS Base Score: 8.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/128466 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

The following products, running on all supported platforms, are affected:
IBM InfoSphere Information Server: versions 9.1, 11.3, 11.5 and 11.7
IBM InfoSphere Information Server on Cloud: version 11.5

Remediation/Fixes

None

Workarounds and Mitigations

Mitigation Steps:

• Maintain strict and audited access controls to the DataStage client machines.
For guidance on credential mapping:
https://www.ibm.com/support/knowledgecenter/en/SSZJPZ_11.5.0/com.ibm.swg.im.iis.found.admin.common.doc/topics/admsec_engine_security_and_credential_mapping.html
For a detailed description of Roles, Groups and tasks that can be done:
https://www.ibm.com/developerworks/community/files/basic/anonymous/api/library/0e088c99-9f24-4c5c-a79a-a65ab8323565/document/499cdb07-a12e-43d3-9314-e36e24c148de/media/Administrator Pg. 16-Pg 19

• Limit communication between DataStage Windows Client and Server to be via trusted networks (VPN, Firewall, Private Networks) only

• Monitor access from DataStage Windows Client to DataStage Server

• DataStage Client and Server requires a single port to be opened (default 31538) for communication. Limit opening any other ports between client and server as documented: https://www.ibm.com/support/knowledgecenter/en/SSZJPZ_11.5.0/com.ibm.swg.im.iis.productization.iisinfsv.install.doc/topics/wsisinst_pln_networks.html