Security Bulletin
Summary
IBM i Access Client Solutions is vulnerable to a remote attacker bypassing integrity checks (CVE-2023-48795) found in Apache Mina SSHD Common. Apache Mina SSHD Common is used by the Open Source Package Manager feature of IBM i Access Client Solutions when authenticating to the IBM i server. This bulletin identifies the steps to take to address the vulnerability as described in the remediation/fixes section.
Vulnerability Details
CVEID: CVE-2023-48795
DESCRIPTION: OpenSSH is vulnerable to a machine-in-the-middle attack, caused by a flaw in the extension negotiation process in the SSH transport protocol when used with certain OpenSSH extensions. A remote attacker could exploit this vulnerability to launch a machine-in-the-middle attack and strip an arbitrary number of messages after the initial key exchange, breaking SSH extension negotiation and downgrading the client connection security.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/275282 for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N)
Affected Products and Versions
Affected Product(s) | Version(s) |
IBM i Access Family | 1.1.2 - 1.1.4, 1.1.4.3 - 1.1.9.4 |
Remediation/Fixes
The issue can be fixed by upgrading to version 1.1.9.5 or later. See IBM i Access Client Solutions updates for the latest version available.
Product(s) |
Version(s) |
Remediation/Fix/Instructions |
IBM i Access Client Solutions |
1.1.2 - 1.1.4, |
The current version of IBM i Access Client Solutions is available at Downloads. Or you may download it from the general IBM i software site at |
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
19 Apr 2024: Initial Publication
*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:
19 April 2024
UID
ibm17148782