Security Bulletin: Samba vulnerability issue affects IBM Storwize V7000 Unified (CVE-2017-9461)

Summary

IBM Storwize V7000 Unified is shipped with Samba, for which a fix is available for security vulnerability.

Vulnerability Details

Samba is used in IBM Storwize V7000 Unified to enable file management and authentication services for Microsoft Windows environments.

CVEID: CVE-2017-9461**
DESCRIPTION:** Samba is vulnerable to a denial of service, caused by improper handling of dangling symlinks in smbd. A remote attacker could exploit this vulnerability to cause a fd_open_atomic infinite loop with high CPU usage and memory consumption on the system.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/126916 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

IBM Storwize V7000 Unified
The product is affected when running code releases 1.5.0.0 to 1.6.2.2

Remediation/Fixes

A fix for this issue is in version 1.6.2.3 of IBM Storwize V7000 Unified. Version 1.5 is end of service. Customers running on this release can upgrade to IBM Storwize V7000 Unified 1.6.2.3, so that the fix gets applied.

Latest Storwize V7000 Unified Software

Please contact IBM support for assistance in upgrading your system.

Workarounds and Mitigations

Mitigation(s): Ensure that all users who have access to the system are authenticated by another security system such as a firewall.