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

Summary

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: https://exchange.xforce.ibmcloud.com/vulnerabilities/190121 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: https://exchange.xforce.ibmcloud.com/vulnerabilities/195353 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

Remediation/Fixes

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.

Updated JRE’s have been made available on Fix Central as Fix packs.
AIX: 8.0.6-CICSTG-AIXpSeries32-JRE-SR25
xLinux: 8.0.6-CICSTG-Linuxx8632-JRE-SR25
pLinux: 8.0.6-CICSTG-LinuxpSeries32-JRE-SR25
zLinux: 8.0.6-CICSTG-LinuxzSeries31-JRE-SR25
Windows:8.0.6-CICSTG-Windowsx8632-JRE-SR25

| https://www-945.ibm.com/support/fixcentral/swg/identifyFixes?query.parent=ibm~Other%20software&query.product=ibm~WebSphere~CICS%20Transaction%20Gateway%20for%20Multiplatforms&query.release=9.2.0&query.platform=All
CICS Transaction Gateway for Multiplatforms| 9.1.0.0
9.1.0.1
9.1.0.2
9.1.0.3|

Updated JRE’s have been made available on Fix Central as Fix packs.
AIX: 7.1.4-CICSTG-AIXpSeries32-JRE-SR80
xLinux: 7.1.4-CICSTG-Linuxx8632-JRE-SR80
pLinux: 7.1.4-CICSTG-LinuxpSeries32-JRE-SR80
zLinux: 7.1.4-CICSTG-LinuxzSeries31-JRE-SR80
Windows: 7.1.4-CICSTG-Windowsx8632-JRE-SR80

| https://www-945.ibm.com/support/fixcentral/swg/identifyFixes?query.parent=ibm~Other%20software&query.product=ibm~WebSphere~CICS%20Transaction%20Gateway%20for%20Multiplatforms&query.release=9.1.0&query.platform=All
CICS Transaction Gateway for Multiplatforms|

9.0.0.0
9.0.0.1
9.0.0.2
9.0.0.3
9.0.0.4

9.0.0.5
8.1.0.0
8.1.0.1
8.1.0.2
8.1.0.3
8.1.0.4
8.1.0.5
8.0.0.0
8.0.0.1
8.0.0.2
8.0.0.3
8.0.0.4
8.0.0.5
8.0.0.6

| 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| https://www-945.ibm.com/support/fixcentral/swg/identifyFixes?query.parent=ibm~Other%20software&query.product=ibm~WebSphere~CICS%20Transaction%20Gateway%20for%20Multiplatforms&query.release=9.0.0&query.platform=All

Workarounds and Mitigations

None