Security Bulletin: IBM Storage Ceph is vulnerable to Improper Certificate Validation in the RHEL UBI (CVE-2023-28321)

Summary

RHEL UBI is used by IBM Storage Ceph as the base operating system. CVE-2023-28321 This bulletin identifies the steps to take to address the vulnerability in the RHEL UBI.

Vulnerability Details

CVEID:CVE-2023-28321
**DESCRIPTION:**cURL libcurl could allow a remote attacker to bypass security restrictions, caused by a flaw when listed as “Subject Alternative Name” in TLS server certificates. By sending a specially crafted request, an attacker could exploit this vulnerability to accept mismatch wildcard patterns.
CVSS Base score: 3.7
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/255625 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now.
Download the latest version of IBM Storage Ceph and upgrade to 6.1z3 by following instructions.

<https://public.dhe.ibm.com/ibmdl/export/pub/storage/ceph/&gt;
<https://www.ibm.com/docs/en/storage-ceph/6?topic=upgrading&gt;

Workarounds and Mitigations

None