Security Bulletin
Summary
There are multiple vulnerabilities in components of IBM i Modernization Engine for Lifecycle Integration as described in the Vulnerability Details section. QOS.ch Sarl Logback is vulnerable to a denial of service (CVE-2023-6481, CVE-2023-6378). The Bouncy Castle Crypto Package For Java (bc-java) could allow a remote attacker to obtain sensitive information (CVE-2023-33201). Golang Go is vulnerable to a denial of service (CVE-2023-39325). OpenSSH is vulnerable to a machine-in-the-middle attack (CVE-2023-48795). These components are used in IBM i Modernization Engine for Lifecycle Integration for infrastructure support in the platform. IBM has addressed the vulnerabilities in IBM i Modernization Engine for Lifecycle Integration with updates to affected components.
Vulnerability Details
CVEID: CVE-2023-6481
DESCRIPTION: QOS.ch Sarl Logback is vulnerable to a denial of service, caused by a serialization flaw in the logback receiver component. By sending a specially crafted data, a local attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/273013 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H)
CVEID: CVE-2023-33201
DESCRIPTION: The Bouncy Castle Crypto Package For Java (bc-java) could allow a remote attacker to obtain sensitive information, caused by not validating the X.500 name of any certificate in the implementation of the X509LDAPCertStoreSpi.java class. By using blind LDAP injection attack techniques, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.
CVSS Base score: 7.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/258653 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N)
CVEID: CVE-2023-6378
DESCRIPTION: QOS.ch Sarl Logback is vulnerable to a denial of service, caused by a serialization flaw in the receiver component. By sending specially crafted poisoned data, 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/272577 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-2023-39325
DESCRIPTION: Golang Go is vulnerable to a denial of service, caused by an uncontrolled resource consumption flaw in the net/http and x/net/http2 packages. By sending specially crafted requests using HTTP/2 client, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268645 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
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 Modernization Engine for Lifecycle Integration | 1.0 - 1.4.5 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by upgrading. The issue can be fixed by upgrading to version 1.4.6 or later.
| Product(s) | Version(s) | Remediation/Fix/Instructions |
| IBM i Modernization Engine for Lifecycle Integration | 1.0 - 1.4.5 | Follow instructions to download and install v1.4.6 |
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
11 Mar 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:
11 March 2024
UID
ibm17136345