Security Bulletin: IBM Event Streams is vulnerable to a denial of service attack due to the k8sio apiMAChinery component (CVE-2023-44487).

Summary

IBM Event Streams is vulnerable to a denial of service attack due to the k8sio apiMAChinery component. k8sio apiMachinery is utilized for handling Kubernetes API interactions, facilitating streamlined communication with Kubernetes clusters within event-driven applications.

Vulnerability Details

CVEID:CVE-2023-44487
**DESCRIPTION:**Multiple vendors are vulnerable to a denial of service, caused by a flaw in handling multiplexed streams in the HTTP/2 protocol. By sending numerous HTTP/2 requests and RST_STREAM frames over multiple streams, a remote attacker could exploit this vulnerability to cause a denial of service due to server resource consumption.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268044 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

IBM strongly recommends addressing the vulnerability now by upgrading

Upgrade to IBM Event Streams 11.4.0 by following the upgrading and migrating documentation.

Workarounds and Mitigations

None