Security Bulletin: App Connect Enterprise Certified Container may be vulnerable to a denial of service vulnerability (CVE-2020-1971)

Summary

If an App Connect flow calls a URL at an endpoint controlled by a malicious user that also controls a Certificate Revocation List, those calls may trigger an application crash resulting in a denial of service.

Vulnerability Details

CVEID:CVE-2020-1971
**DESCRIPTION:**OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference. If the GENERAL_NAME_cmp function contain an EDIPARTYNAME, an attacker could exploit this vulnerability to cause the application to crash.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/192748 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)

Affected Products and Versions

Remediation/Fixes

App Connect Enterprise Certified Container 1.0 CD

Upgrade to App Connect Enterprise Certified Container to Operator version 1.2.0 (available in CASE 1.2.0) or higher, and ensure that any IntegrationServer and Designer components are at 11.0.0.11-r1 or higher.

App Connect Enterprise Certified Container 1.1 LTS

Upgrade to App Connect Enterprise Certified Container Operator version 1.1.1 EUS (available in CASE 1.1.1) or higher, and ensure that any IntegrationServer and Designer components are at 11.0.0.12-r1-eus or higher.

Workarounds and Mitigations

None