Security Bulletin: IBM i is vulnerable to an attacker executing CL commands due to an exploitation of DDM architecture (CVE-2023-30990)

Summary

IBM i is vulnerable to a remote attacker executing CL commands due to an exploitation of DDM architecture as described in the vulnerability details section. IBM i has addressed the vulnerability in the DDM architecture as described in the remediation/fixes section.

Vulnerability Details

CVEID:CVE-2023-30990
**DESCRIPTION:**IBM i 7.2, 7.3, 7.4, and 7.5 could allow a remote attacker to execute CL commands as QUSER, caused by an exploitation of DDM architecture. IBM X-Force ID: 254036.
CVSS Base score: 8.6
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/254036 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)

Affected Products and Versions

Remediation/Fixes

The issue can be fixed by applying a PTF to IBM i. IBM i releases 7.5, 7.4, 7.3, and 7.2 will be fixed.

The IBM i PTF numbers for IBM i 5770-SS1 Base Operating System contain the fix for the vulnerability.

IBM i Release| 5770-SS1
PTF Number| PTF Download Link
—|—|—
7.5| SI83472| <https://www.ibm.com/support/pages/ptf/SI83472&gt;
7.4| SI83473| <https://www.ibm.com/support/pages/ptf/SI83473&gt;
7.3| SI83474| <https://www.ibm.com/support/pages/ptf/SI83474&gt;
7.2| SI84090| <https://www.ibm.com/support/pages/ptf/SI84090&gt;

<https://www.ibm.com/support/fixcentral&gt;

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