Security Bulletin: IBM Storage Ceph is vulnerable to a Heap-based Buffer Overflow in the RHEL UBI (CVE-2023-4911)

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-2023-4911

Vulnerability Details

CVEID:CVE-2023-4911
**DESCRIPTION:**glibc could allow a local authenticated attacker to gain elevated privileges on the system, caused by a buffer overflow in the dynamic loader’s processing of the GLIBC_TUNABLES environment variable. By sending overly long data, an attacker could exploit this vulnerability to gain root privileges on the system.
CVSS Base score: 7.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/267581 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now.
Download the latest version of IBM Storage Ceph and upgrade to 7.0 or 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