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Security Bulletin: IBM i is vulnerable to a local privilege escalation (CVE-2023-40375).

Security Bulletin


Summary

IBM i is vulnerable to a local privilege escalation due to a flaw in the base operating system code related to the Integrated application server for IBM i as described in the vulnerability details section. The vulnerability exists even when the Integrated application server is not configured or active on the system. IBM i has addressed the vulnerability with a fix as described in the remediation/fixes section.

Vulnerability Details

CVEID:   CVE-2023-40375
DESCRIPTION:   Integrated application server for IBM i contains a local privilege escalation vulnerability. A malicious actor with command line access to the host operating system can elevate privileges to gain root access to the host operating system.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/263580 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Affected Product(s)Version(s)
IBM i7.5
IBM i7.4
IBM i7.3
IBM i7.2

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 number for 5770-SS1 contains the fix for the vulnerability.
IBM i Release5770-SS1PTF Download Link
7.5SI84247https://www.ibm.com/support/pages/ptf/SI84247
7.4SI84248https://www.ibm.com/support/pages/ptf/SI84248
7.3SI84249https://www.ibm.com/support/pages/ptf/SI84249
7.2SI84250https://www.ibm.com/support/pages/ptf/SI84250


https://www.ibm.com/support/fixcentral

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

Get Notified about Future Security Bulletins

References

Off

Acknowledgement

The vulnerability was reported to IBM by Zoltan Panczel, Silent Signal.

Change History

25 Sep 2023: Initial Publication
28 Sep 2023: Notification

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location

Worldwide

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Document Information

Modified date:
03 October 2023

UID

ibm17038748