Security Bulletin: IBM i Modernization Engine for Lifecycle Integration is vulnerable to multiple vulnerabilities

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

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.

Workarounds and Mitigations

None