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Security Bulletin: March 2021 : Multiple vulnerabilities in IBM Java Runtime affect CICS Transaction Gateway

Security Bulletin


There are multiple vulnerabilities in IBM® Runtime Environment Java™ Versions 7.0, 7.1 and 8.0 used by CICS Transaction Gateway. CICS Transaction Gateway has addressed the applicable CVEs.

Vulnerability Details

CVEID:   CVE-2020-14803
DESCRIPTION:   An unspecified vulnerability in Java SE could allow an unauthenticated attacker to obtain sensitive information resulting in a low confidentiality impact using unknown attack vectors.
CVSS Base score: 5.3
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

CVEID:   CVE-2020-27221
DESCRIPTION:   Eclipse OpenJ9 is vulnerable to a stack-based buffer overflow when the virtual machine or JNI natives are converting from UTF-8 characters to platform encoding. By sending an overly long string, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base score: 9.8
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM CICS Transaction Gateway9.2.0.0-
IBM CICS Transaction Gateway9.1.0.0-
IBM CICS Transaction Gateway9.0.0.0-
IBM CICS Transaction Gateway8.1.0.0-
IBM CICS Transaction Gateway8.0.0.0-


Upgrade the JRE used by CICS TG Java client applications and/or the CICS TG Gateway daemon. Updated JREs which can used with CICS TG Java client applications and the Gateway daemon are made available on Fix Central.
ProductVRMFAPARRemediation / First Fix
CICS Transaction Gateway for Multiplatforms9.2.0.0
CICS Transaction Gateway for Multiplatforms9.1.0.0
CICS Transaction Gateway for Multiplatforms
Updated JRE's have been made available on Fix Central as Fix packs.
Solaris: 7.0.10-CICSTG-SolarisSPARC32-JRE-SR80
AIX: 7.0.10-CICSTG-AIXpSeries32-JRE-SR80
xLinux: 7.0.10-CICSTG-Linuxx8632-JRE-SR80
pLinux: 7.0.10-CICSTG-LinuxpSeries32-JRE-SR80
zLinux: 7.0.10-CICSTG-LinuxzSeries31-JRE-SR80
Windows: 7.0.10-CICSTG-Windowsx8632-JRE-SR80

Workarounds and Mitigations


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Change History

17 Mar 2021: Initial Publication

*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.

Document Location


[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSZHFX","label":"CICS Transaction Gateway for Multiplatforms"},"Component":"","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF027","label":"Solaris"},{"code":"PF033","label":"Windows"}],"Version":" 8.0.0, 8.1.0, 9.0.0, 9.1.0, 9.2.0","Edition":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]

Document Information

Modified date:
17 March 2021