Security Bulletin: IBM App Connect Enterprise Certified Container Operator may be vulnerable to DoS caused by a flaw in Golang module net/http (CVE-2021-31525)

Summary

The validation webhook in the Operator for IBM App Connect may be vulnerable to a denial of service vulnerability. By sending a message with a specially crafted header, an attacker could cause a denial of service condition in the validation webhook that prevents new deployments from completing or configuration changes to existing deployments to complete.

Vulnerability Details

CVEID:CVE-2021-31525
**DESCRIPTION:**Golang Go is vulnerable to a denial of service, caused by a flaw in net/http. By sending a specially-crafted header to ReadRequest or ReadResponse. Server, Transport, and Client, a remote attacker could exploit this vulnerability to cause a (panic) denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/202709 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, 1.2, 1.3 and 1.4 CD

Upgrade to App Connect Enterprise Certified Container Operator version 1.5.0 (available in CASE 1.5.0) or higher.

App Connect Enterprise Certified Container 1.1 LTS

Upgrade to App Connect Enterprise Certified Container Operator version 1.1.2 EUS (available in CASE 1.1.2) or higher.

Workarounds and Mitigations

None