Security Bulletin: IBM App Connect Enterprise Certified Container operands are vulnerable to denial of service and security restriction bypass due to [CVE-2023-2283], [CVE-2023-1667]

Summary

libssh is found in the IBM App Connect Enterprise Certified Container images as part of the base operating system. IBM App Connect Enterprise Certified Container operands are vulnerable to denial of service and security restriction bypass. This bulletin provides patch information to address the reported vulnerability in libssh. [CVE-2023-2283], [CVE-2023-1667]

Vulnerability Details

CVEID:CVE-2023-2283
**DESCRIPTION:**libssh could allow a remote attacker to bypass security restrictions, caused by a memory allocation flaw in thepki_verify_data_signature function. By sending a specially crafted request, an attacker could exploit this vulnerability to bypass the authentication check of the connecting client.
CVSS Base score: 4.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/257617 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVEID:CVE-2023-1667
**DESCRIPTION:**libssh is vulnerable to a denial of service, caused by a NULL pointer dereference during rekeying with algorithm guessing. A remote authenticated attacker could exploit this vulnerability to cause the daemon to crash.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/256622 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Remediation/Fixes

IBM strongly suggests the following:
App Connect Enterprise Certified Container 4.1.x to 9.0.x (Continuous Delivery)

Upgrade to App Connect Enterprise Certified Container Operator version 9.1.0 or higher, and ensure that all components are at 12.0.9.0-r1 or higher. Documentation on the upgrade process is available at <https://www.ibm.com/docs/en/app-connect/containers_cd?topic=releases-upgrading-operator&gt;

App Connect Enterprise Certified Container 5.0 LTS (Long Term Support)

Upgrade to App Connect Enterprise Certified Container Operator version 5.0.9 or higher, and ensure that all components are at 12.0.9.0-r1-lts or higher. Documentation on the upgrade process is available at <https://www.ibm.com/docs/en/app-connect-contlts?topic=releases-upgrading-operator&gt;

Workarounds and Mitigations

None