Security Bulletin: IBM Java SDK and IBM Java Runtime for IBM i are vulnerable to arbitrary code execution due to an unsafe deserialization flaw (CVE-2022-40609).

Summary

IBM® SDK Java™ Technology Edition and IBM® Runtime Environment Java™ used by IBM i are vulnerable to an attacker executing arbitrary code due to an unsafe deserialization flaw as described in the vulnerability details section. The vulnerability is fixed by applying an IBM i Group PTF for Java as described in the remediation/fixes section.

Vulnerability Details

CVEID:CVE-2022-40609
**DESCRIPTION:**IBM SDK, Java Technology Edition 7.1.5.18 and 8.0.8.0 could allow a remote attacker to execute arbitrary code on the system, caused by an unsafe deserialization flaw. By sending specially-crafted data, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 236069.
CVSS Base score: 8.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/236069 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

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