Security Bulletin: IBM Event Streams is affected by a libcurl vulnerability

Summary

cURL libcurl is used by IBM Event Streams as part of the Operating System (CVE-2023-27536). The library supports retrieving data in-memory, downloading to disk, or streaming using the R “connection” interface. This bulletin identifies the steps to take to address the vulnerability.

Vulnerability Details

CVEID:CVE-2023-27536
**DESCRIPTION:**cURL libcurl could allow a remote attacker to bypass security restrictions, caused by a GSS delegation too eager connection re-use flaw. By sending a specially crafted request, an attacker could exploit this vulnerability to reuse a previously created connection even when the GSS delegation.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/250531 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

IBM strongly recommends addressing the vulnerability now by upgrading

Upgrade to IBM Event Streams 11.2.3 by following the upgrading and migrating documentation.

Workarounds and Mitigations

None