Security Bulletin: IBM Java SDK and IBM Java Runtime for IBM i are vulnerable to denial of service, availability, integrity, and confidentiality impacts due to multiple vulnerabilities.

Summary

IBM® SDK Java™ Technology Edition and IBM® Runtime Environment Java™ used by IBM i are vulnerable to denial of service, availability, integrity, and confidentiality impacts as described in the vulnerability details section (CVE-2022-21426, CVE-2023-2597, CVE-2023-21830, CVE-2023-21843, CVE-2023-21930, CVE-2023-21937, CVE-2023-21938, CVE-2023-21939, CVE-2023-21954, CVE-2023-21967, CVE-2023-21968). The vulnerabilities are fixed by applying an IBM i Group PTF for Java as described in the remediation/fixes section.

Vulnerability Details

CVEID:CVE-2022-21426
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the JAXP component could allow an unauthenticated attacker to cause a denial of service resulting in a low availability impact using unknown attack vectors.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/224714 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-2023-21930
**DESCRIPTION:**An unspecified vulnerability in Oracle Java SE, Oracle GraalVM Enterprise Edition related to the JSSE component could allow an unauthenticated attacker to cause high confidentiality impact and high integrity impact.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253115 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

CVEID:CVE-2023-21967
**DESCRIPTION:**An unspecified vulnerability in Oracle Java SE, Oracle GraalVM Enterprise Edition related to the JSSE component could allow a remote attacker to cause high availability impact.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253156 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-21954
**DESCRIPTION:**An unspecified vulnerability in Oracle Java SE, Oracle GraalVM Enterprise Edition related to the Hotspot component could allow a remote attacker to cause high confidentiality impact.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253166 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID:CVE-2023-21939
**DESCRIPTION:**An unspecified vulnerability in Oracle Java SE, Oracle GraalVM Enterprise Edition related to the Swing component could allow a remote attacker to cause integrity impact.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253168 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2023-21968
**DESCRIPTION:**An unspecified vulnerability in Oracle Java SE and GraalVM Enterprise Edition related to the Libraries component could allow an unauthenticated attacker to cause low integrity impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253083 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-2023-21937
**DESCRIPTION:**An unspecified vulnerability in Oracle Java SE, Oracle GraalVM Enterprise Edition related to the Networking component could allow a remote attacker to cause integrity impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253167 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-2023-21938
**DESCRIPTION:**An unspecified vulnerability in Oracle Java SE, Oracle GraalVM Enterprise Edition related to the Libraries component could allow a remote attacker to cause integrity impact.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/253155 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-2023-2597
**DESCRIPTION:**Eclipse Openj9 is vulnerable to a buffer overflow, caused by improper bounds checking by the getCachedUTFString() function. By using specially crafted input, a local authenticated attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base score: 7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/255906 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

CVEID:CVE-2023-21830
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Serialization component could allow a remote attacker to cause a denial of service resulting in a low integrity impact using unknown attack vectors.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/245038 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID:CVE-2023-21843
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Sound component could allow a remote attacker to cause a denial of service resulting in a low integrity impact using unknown attack vectors.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/245037 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)

Affected Products and Versions

Remediation/Fixes

The vulnerabilities can be fixed by applying the latest Java Group PTF. Releases 7.5, 7.4, and 7.3, of IBM i will be fixed.

The IBM i Group PTF numbers contain the fixes for the vulnerabilities. Future Group PTFs for Java will also contain the fixes for the vulnerabilities.

SF99955 Level 6

|

<https://www.ibm.com/support/pages/uid/nas4SF99955&gt;

7.4|

SF99665 Level 19

|

<https://www.ibm.com/support/pages/uid/nas4SF99665&gt;

7.3|

SF99725 Level 29

| <https://www.ibm.com/support/pages/uid/nas4SF99725&gt;

Please see the Java document at this URL for the latest Java information for IBM i:
<https://www.ibm.com/support/pages/java-ibm-i&gt;

If you run your own Java code using the IBM Java Runtime delivered with this product, you should evaluate your code to determine whether additional Java vulnerabilities are applicable to your code. For a complete list of vulnerabilities, refer to the “IBM Java SDK Security Vulnerabilities”, located in the References section for more information.

Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.

Workarounds and Mitigations

None