Security Bulletin: A vulnerability affects the IBM FlashSystem models 840 and 900

Summary

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.

Vulnerability Details

CVEID: CVE-2018-1495**
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&gt; 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 1.3.0.10
• VRMFs prior to 1.4.8.0
• VRMFs prior to 1.5.1.1

Remediation/Fixes

MTMs

| VRMF| APAR| Remediation/First Fix
—|—|—|—
FlashSystem****840 MTM:
9840-AE1 &9843-AE1

**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: 1.5.1.1
_1.4 stream: 1.4.8.0 _
1.3 stream: 1.3.0.10| _ 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 1.3.0.10 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 1.4.8.0 or 1.5.1.1 to pick up these security fixes in these newer code streams which will continue to be supported.