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Security Bulletin:Samba vulnerability issue on IBM Storwize V7000 Unified (CVE-2015-7560)

Security Bulletin


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-2015-7560

Samba could allow a remote authenticated attacker to launch a symlink attack. By creating a symbolic link to a file or directory using SMB1 UNIX extensions and then issuing a non-UNIX SMB1, an attacker could exploit this vulnerability to overwrite access control lists on the directory.
CVSS Base Score: 4.3
CVSS Temporal Score: See for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

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


For 1.5.* release - A fix for this issue is in version of IBM Storwize V7000 Unified.
For 1.6.* release - A fix for this issue is in version of IBM Storwize V7000 Unified.

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

Latest Storwize V7000 Unified Software

Workarounds and Mitigations

In smb.conf file add the parameter unix extensions = no and server min protocol = SMB2 to the [global] section and retsart smbd.

Mitigation : None

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Change History

4 May 2016: First draft
16 May 2016: changes done as per legal team comment.
27 May 2016: Final version

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

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Document Information

Modified date:
17 June 2018