Security Bulletin: IBM Storage Ceph is vulnerable to Out-of-bounds Read in the RHEL UBI (CVE-2023-4527)

Summary

RHEL UBI is used by IBM Storage Ceph as the base operating system. CVE-2023-4527 This bulletin identifies the steps to take to address the vulnerability in RHEL.

Vulnerability Details

CVEID:CVE-2023-4527
**DESCRIPTION:**glibc is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the getaddrinfo function. By sending a DNS response over TCP larger than 2048 bytes, a remote attacker could overflow a buffer, allowing an attacker to obtain sensitive information or cause a denial of service.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/266261 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/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 6.1z2 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