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Status Not under consideration
Workspace z/OS Connect
Created by Guest
Created on Nov 17, 2020

RELATED IDEAS

Administrative Option to prevent IMS Trancode substitution from z/OS Connect API JSON payload

According to point 4 of the following KC
https://www.ibm.com/support/knowledgecenter/en/SS4SVW_3.0.0/configuring/mobile_trancode_override.html
The IMS transaction code can be overridden by the API JSON payload if it is included as service interface input. In other words, the API consumer could invoke any IMS transaction by simply specifying the transaction code in the API request payload. Although IMS can use RACF to defend itself, this transaction code override feature defeats the purpose of API level authorization in z/OS Connect and open the door for security exposure.
We request an administrative option to prevent the override as described in point 4 and an error message be written when this action is taken.

Idea priority High
  • Guest
    Reply
    |     Feb 18, 2021

    Thank you for this RFE.

    Whilst this requirement is valid, based on our current plans and priorities for IBM z/OS Connect Enterprise Edition, it is not likely that this could be implemented in the next 12 months.

    In the meantime, it is worth noting that:
    1) It is possible to remove the transcode field from the Service or API interface in the z/OS Connect EE API Toolkit
    2) If the transcode field is required, then if malicious user specified a trancode in the JSON payload of the API that they are not authorized to invoke, this would be blocked by the SAF check during authorization to the program in IMS:
    https://www.ibm.com/support/knowledgecenter/en/SSEPH2_15.2.0/com.ibm.ims152.doc.sag/system_admin/ims_secur_authcmdstrans.htm

    Correspondingly this requirement is being declined at this point. You have an opportunity to resubmit in twelve months time if you wish it to be reconsidered then.

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