There is a vulnerability which the IBM FlashSystem™ 840 and FlashSystem 900 are susceptible. An exploit of this vulnerability (CVE-2018-1495) could make the system susceptible to an attack which could allow an attacker to overwrite arbitrary files.
DESCRIPTION: 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 https://exchange.xforce.ibmcloud.com/vulnerabilities/141148 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
FlashSystem 840 machine type and models (MTMs) affected include 9840-AE1 and 9843-AE1.
FlashSystem 900 MTMs affected include 9840-AE2 and 9843-AE2.
Supported code versions which are affected
- VRMFs prior to 220.127.116.11
- VRMFs prior to 18.104.22.168
- VRMFs prior to 22.214.171.124
|FlashSystem 840 MTM: |
FlashSystem 900 MTMs:9840-AE2 &9843-AE2
|Code fixes are now available, the minimum VRMF containing the fix depends on the code stream: |
Fixed Code VRMF
1.5 stream: 126.96.36.199
1.4 stream: 188.8.131.52
1.3 stream: 184.108.40.206
|N/A||FlashSystem 840 fixes and FlashSystem 900 fixes are available @ IBM’s Fix Central|
Workarounds and Mitigations
Customers running the 1.3 code version should be aware that 220.127.116.11 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 18.104.22.168 or 22.214.171.124 to pick up these security fixes in these newer code streams which will continue to be supported.
Get Notified about Future Security Bulletins
The vulnerability was reported to IBM by Sebastian Neuner and Jan Bee of the Google Security Team.
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.
17 June 2018