Security Bulletin: FasterXML Jackson Databind used by CICS Transaction Gateway could provide weaker than expected security

Summary

FasterXML Jackson Databind used by CICS Transaction Gateway could provide weaker than expected security, caused by not having entity expansion secured properly (CVE-2020-25649). CICS Transaction Gateway addressed the applicable CVE.

Vulnerability Details

CVEID:CVE-2020-25649
**DESCRIPTION:**FasterXML Jackson Databind could provide weaker than expected security, caused by not having entity expansion secured properly. A remote attacker could exploit this vulnerability to launch XML external entity (XXE) attacks to have impact over data integrity.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/192648 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

Remediation/Fixes

Apply the applicable CICS Transaction Gateway APAR below.

Product

|

VRMF

|

APAR

|

Remediation / First Fix

—|—|—|—
CICS Transaction Gateway| 9.3| PH50737|

s930 Container:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737-s390xcontainer&source=SAR

x86 Container:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737-x86container&source=SAR

AIX:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737-AIX&source=SAR

ILNX:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737-ILNX&source=SAR

PLNX:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737-PLNX&source=SAR

PLXLE:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737-PLXLE&source=SAR

WIN:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737-WIN&source=SAR

ZLNX:

http://www.ibm.com/support/fixcentral/quickorder?product=ibm%2FWebSphere%2FCICS+Transaction+Gateway+for+Multiplatforms&fixids=9.3.0.0-CICSTG-PH50737&source=SAR

Workarounds and Mitigations

None