Security Bulletin: IBM Java SDK and IBM Java Runtime for IBM i are vulnerable to bypassing security restrictions, denial of service attacks, and data integrity impacts due to multiple vulnerabilities.

Summary

IBM® SDK Java™ Technology Edition and IBM® Runtime Environment Java™ used by IBM i are vulnerable to bypassing security restrictions, denial of service attacks, and allowing an unauthenticated attacker to modify data as seen in the vulnerability details section (CVE-2022-3676, CVE-2022-21619, CVE-2022-21624, CVE-2022-21626, CVE-2022-21628). The vulnerabilities are fixed by applying a Group PTF as described in the remediation/fixes section.

Vulnerability Details

CVEID:CVE-2022-3676
**DESCRIPTION:**Eclipse Openj9 could allow a remote attacker to bypass security restrictions, caused by improper runtime type check by the interface calls. By sending a specially-crafted request using bytecode, an attacker could exploit this vulnerability to access or modify memory.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/239608 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID:CVE-2022-21628
**DESCRIPTION:**Java SE is vulnerable to a denial of service, caused by a flaw in the Lightweight HTTP Server. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/238623 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-2022-21626
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Security 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/238689 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-2022-21624
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Security component could allow an unauthenticated attacker to update, insert or delete data 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/238699 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-2022-21619
**DESCRIPTION:**An unspecified vulnerability in Java SE related to the Security component could allow an unauthenticated attacker to update, insert or delete data 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/238698 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, 7.3, and 7.2 of IBM i will be fixed.
The IBM i Group PTF numbers containing the fix for the vulnerabilities follow. Future Group PTFs for Java will also contain the fix for these vulnerabilities.

SF99955 Level 4

|

<https://www.ibm.com/support/pages/sf99955-750-java-level-4&gt;

7.4|

SF99665 Level 17

|

<https://www.ibm.com/support/pages/sf99665-740-java-level-17&gt;

7.3|

SF99725 Level 28

|

<https://www.ibm.com/support/pages/sf99725-730-java-level-28&gt;

7.2|

SF99716 Level 38

|

<https://www.ibm.com/support/pages/sf99716-720-java-level-38&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