Security Bulletin: IBM Storage Ceph is vulnerable to an Observable Discrepancy in the RHEL UBI (CVE-2023-5981)

Summary

RHEL UBI is used by IBM Storage Ceph as the base operating system. This bulletin identifies the steps to take to address the vulnerability in the RHEL UBI. CVE-2023-5981.

Vulnerability Details

CVEID:CVE-2023-5981
**DESCRIPTION:**GNU GnuTLS could allow a remote attacker to obtain sensitive information, caused by a timing sidechannel issue during RSA-PSK key exchange. By sending a specially crafted request, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/271914 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.
Download the latest version of IBM Storage Ceph and upgrade to 7.0z1 or later by following instructions.

<https://public.dhe.ibm.com/ibmdl/export/pub/storage/ceph/&gt;
<https://www.ibm.com/docs/en/storage-ceph/7?topic=upgrading&gt;

Workarounds and Mitigations

None