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Security Bulletin: IBM Flex System Manager (FSM) is affected by a kernel vulnerability

Security Bulletin


Summary

A security vulnerability has been identified in the IBM FSM kernel. This bulletin addresses this issue.

Vulnerability Details

CVEID: CVE-2016-5195
DESCRIPTION: Linux Kernel could allow a local attacker to gain elevated privileges on the system, caused by a race condition when handling the copy-on-write (COW) breakage of private read-only memory mappings by the memory subsystem. An attacker could exploit this vulnerability to gain write access to read-only memory mappings and elevated privileges on the system. Note: This vulnerability is known as the Dirty COW bug.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/118170 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Flex System Manager 1.3.4.0
Flex System Manager 1.3.3.0
Flex System Manager 1.3.2.1
Flex System Manager 1.3.2.0

Remediation/Fixes

IBM recommends updating the FSM using the instructions referenced in this table.

      Product
      VRMF
APAR
      Remediation
Flex System Manager
      1.3.4.0
IT13722
 Install fsmfix1.3.4.0_IT13720_IT13721_IT13722_IT18327_IT18400
Flex System Manager
      1.3.3.0
IT13722
 Install fsmfix1.3.3.0_IT13720_IT13721_IT13722_IT18327_IT18400
Flex System Manager
      1.3.2.1
      1.3.2.0
IT13722
 Install fsmfix1.3.2.0_IT13720_IT13721_IT13722_IT18327_IT18400

For all VRMF not listed in this table, IBM recommends upgrading to a fixed and supported version/release of the product.

For a complete list of FSM security bulletins refer to this technote: http://www-01.ibm.com/support/docview.wss?uid=nas7797054ebc3d9857486258027006ce4a0&myns=purflex&mync=E&cm_sp=purflex-_-NULL-_-E

Workarounds and Mitigations

None

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References

Complete CVSS v2 Guide
On-line Calculator v2

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

9 February 2017: 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.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
17 June 2018

UID

isg3T1024807

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