Security Bulletin: IBM App Connect Enterprise Certified Container IntegrationServer and IntegrationRuntime operands that use DFDL may be vulnerable to denial of service due to [CVE-2021-22569]

Summary

Protobuf is used by IBM App Connect Enterprise Certified Container for compiling and loading DFDL message models. IBM App Connect Enterprise Certified Container IntegrationServer and IntegrationRuntime operands that use DFDL message models may be vulnerable to denial of service if they process untrusted message models. This bulletin provides patch information to address the reported vulnerability in Protobuf. [CVE-2021-22569]

Vulnerability Details

CVEID:CVE-2021-22569
**DESCRIPTION:**Google Protocol Buffer (protobuf-java) is vulnerable to a denial of service, caused by an issue with allow interleaving of com.google.protobuf.UnknownFieldSet fields. By persuading a victim to open a specially-crafted content, a remote attacker could exploit this vulnerability to cause a timeout in ProtobufFuzzer function, and results in a denial of service condition.
CVSS Base score: 3.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/216851 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)

Affected Products and Versions

Remediation/Fixes

IBM strongly suggests the following:
App Connect Enterprise Certified Container 4.1.x to 8.0.x (Continuous Delivery)

Upgrade to App Connect Enterprise Certified Container Operator version 8.1.0 or higher, and ensure that all IntegrationServer and IntegrationRuntime components are at 12.0.8.0-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 5.0.6 or higher, and ensure that all IntegrationServer components are at 12.0.8.0-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