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Security Bulletin: A vulnerability affects the IBM FlashSystem model V840

Security Bulletin


There is a vulnerability which the IBM FlashSystem™ V840 is susceptible. An exploit of this vulnerability (CVE-2018-1495) could make the system susceptible to attacks which could allow an attacker to overwrite arbitrary files.

Vulnerability Details

CVEID: CVE-2018-1495
 IBM FlashSystem products could allow an authenticated attacker with specialized access to overwrite arbitrary files which could cause a denial of service.
CVSS Base Score: 6.5
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:N/A:H)

Affected Products and Versions

Storage Node machine type and models (MTMs) affected: 9840-AE1 and 9843-AE1
Controller Node MTMs affected: 9846-AC0, 9848-AC0, 9846-AC1, and 9848-AC1

Supported storage node code versions which are affected

  • VRMFs prior to
  • VRMFs prior to
  • VRMFs prior to

Supported controller node code versions which are affected
  • VRMFs prior to
  • VRMFs prior to
  • VRMFs prior to



VRMFAPARRemediation/First Fix
Storage nodes:
9846-AE1 &

Controller nodes:
9848-AC0, &
Code fixes are now available, the minimum VRMF containing the fix depends on the code stream:
Fixed Code VRMF
1.5 stream:
1.4 stream:
1.3 stream:

Controller Node VRMF
8.1 stream:
7.8 stream:
7.7 stream:
N/AFlashSystem V840 fixes for storage and controller node are available @ IBM’s Fix Central

Workarounds and Mitigations

Customers running the 1.3 code version should be aware that is the last planned release for the 1.3 code stream and that it will no longer be supported from a security fix point of view going forward. These customers should consider upgrading to either or to pick up these security fixes in these newer code streams which will continue to be supported.

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The vulnerability was reported to IBM by Sebastian Neuner and Jan Bee of the Google Security Team.

Change History

11 May 2018 Original Version Published

*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