Security Bulletin: IBM Storage Ceph is vulnerable to an Improper Link Resolution Before File Access in the RHEL UBI (CVE-2021-35938)

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-2021-35938.

Vulnerability Details

CVEID:CVE-2021-35938
**DESCRIPTION:**RPM Project RPM could allow a local authenticated attacker to gain elevated privileges on the system, caused by a symbolic link when setting the desired permissions and credentials after installing a file. An attacker could exploit this vulnerability to exchange the original file with a symbolic link to a security-critical file and gain elevated privileges on the system.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/211337 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:R/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 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

Workarounds and Mitigations

None