Security Bulletin: Samba vulnerability issue on IBM Storwize V7000 Unified (CVE-2016-2125, CVE-2016-2126)

Summary

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

Vulnerability Details

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

CVEID: CVE-2016-2125**
DESCRIPTION:** Samba could allow a remote authenticated attacker to gain elevated privileges on the system, caused by the failure of handling the PAC checksum. By using a specially-crafted Kerberos ticket, an authenticated attacker could exploit this vulnerability to gain privileges or cause the winbindd process to crash.
CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/119906 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2016-2126**
DESCRIPTION:** Samba could allow a remote authenticated attacker to gain elevated privileges on the system, caused by forwarding a Ticket Granting Ticket (TGT) to other service when using Kerberos authentication. An attacker could exploit this vulnerability to impersonate the authenticated user and gain elevated privileges on the system.
CVSS Base Score: 8.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/119968 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM Storwize V7000 Unified
The product is affected when running code releases 1.5.0.0 to 1.6.2.0

Remediation/Fixes

For 1.5.0.0 - 1.5.2.5 release - A fix for this issue is in version 1.5.2.6 of IBM Storwize V7000 Unified.
For 1.6.0.0 - 1.6.2.0 release - A fix for this issue is in version 1.6.2.1 of IBM Storwize V7000 Unified.

Customers running an affected version of IBM Storwize V7000 Unified should upgrade to 1.5.2.6 or 1.6.2.1, so that the fix gets applied

Latest Storwize V7000 Unified Software

Workarounds and Mitigations

None