Security Bulletin: IBM App Connect Enterprise Certified Container DesignerAuthoring operands are vulnerable to denial of service due to multiple CVEs in Avahi

Summary

Avahi is not used directly by IBM App Connect Enterprise Certified Container but is present in the DesignerAuthoring operand images. Avahi is vulnerable to denial of service. This bulletin provides patch information to address the reported vulnerability in Avahi. [CVE-2023-38469], [CVE-2023-38470], [CVE-2023-38471], [CVE-2023-38472], [CVE-2023-38473]

Vulnerability Details

CVEID:CVE-2023-38469
**DESCRIPTION:**Avahi is vulnerable to a denial of service, caused by a reachable assertion in avahi_dns_packet_append_record. A local attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261286 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-38470
**DESCRIPTION:**Avahi is vulnerable to a denial of service, caused by a reachable assertion in avahi_escape_label. A local attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261290 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-38471
**DESCRIPTION:**Avahi is vulnerable to a denial of service, caused by a reachable assertion in dbus_set_host_name. A local attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261291 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-38472
**DESCRIPTION:**Avahi is vulnerable to a denial of service, caused by a reachable assertion in avahi_rdata_parse. A local attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261292 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2023-38473
**DESCRIPTION:**Avahi is vulnerable to a denial of service, caused by a reachable assertion in avahi_alternative_host_name. A local attacker could exploit this vulnerability to cause a denial of service.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/261293 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/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 DesignerAuthoring 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 DesignerAuthoring 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