Security Bulletin: IBM App Connect Enterprise Certified Container may be vulnerable to security restriction bypass due to CVE-2021-40528

Summary

GnuPG Libgcrypt is provided as part of the base operating sysem in IBM App Connect Enterprise Certified Container. IBM App Connect Enterprise Certified Container operator and operands may be vulnerable to security restriction bypass. This bulletin provides patch information to address the reported vulnerability CVE-2021-40528 in GnuPG Libgcrypt.

Vulnerability Details

CVEID:CVE-2021-40528
**DESCRIPTION:**GnuPG Libgcrypt could allow a remote attacker to bypass security restrictions, caused by a flaw in the ElGamal implementation. By sending a specially-crafted request, an attacker could exploit this vulnerability to perform a cross-configuration attack against OpenPGP.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/208744 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Remediation/Fixes

App Connect Enterprise Certified Container 4.1, 4.2 and 5.0 (Continuous Delivery)

Upgrade to App Connect Enterprise Certified Container Operator version 5.1.0 or higher, and ensure that all components are at 12.0.5.0-r2 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 5.0.1 or higher, and ensure that all components are at 12.0.6.0-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