Security Bulletin: Vulnerabilities in IBM Java Runtime affect z/Transaction Processing Facility

Summary

There are multiple vulnerabilities in IBM® Runtime Environment Java™ Version 8 that is used by the z/TPF system. z/TPF has addressed the applicable CVEs.

Vulnerability Details

CVEID:CVE-2023-22049
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Libraries component could allow a remote attacker to cause low integrity impacts.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261048 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2023-22081
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the JSSE component could allow a remote attacker to cause no confidentiality impact, no integrity impact, and low availability impact.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268929 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID:CVE-2023-5676
**DESCRIPTION:**Eclipse OpenJ9 is vulnerable to a denial of service, caused by a flaw when a shutdown signal (SIGTERM, SIGINT or SIGHUP) is received before the JVM has finished initializing. By sending a specially crafted request, a local authenticated attacker could exploit this vulnerability to cause an infinite busy hang on a spinlock or a segmentation fault.
CVSS Base score: 4.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/271615 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

1. Apply the APAR, which is available for download from the TPF Family Products: Maintenance web page.
2. Download and install the PJ47207_ibm-java-jre-8.0-8.15.tar.gz package from the z/TPF support for IBM Semeru Runtimes and IBM Java SDK download page.

Workarounds and Mitigations

None.