Security Bulletin: A vulnerability has been identified in IBM Spectrum Scale where an attacker can cause a denial of service (CVE-2020-4217)

Security Bulletin

Summary

A security vulnerability has been identified in all levels of IBM Spectrum Scale that could allow an attacker to cause a denial of service. A fix for this vulnerability is available.

Vulnerability Details

CVEID: CVE-2020-4217
DESCRIPTION: The Spectrum Scale file system component is affected by a denial of service security vulnerability. An attacker can force the Spectrum Scale mmfsd/mmsdrserv daemons to unexpectedly exit, impacting the functionality of the Spectrum Scale cluster and the availability of file systems managed by Spectrum Scale.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/175067 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM Spectrum Scale	All

Remediation/Fixes

For IBM Spectrum Scale V5.0.0.0 through 5.0.4.2, apply V5.0.4.3 available from FixCentral at:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=5.0.4&platform=All&function=all

For IBM Spectrum Scale V4.2.0.0 through V4.2.3.19, apply V4.2.3.20 available from FixCentral at:

https://www.ibm.com/support/fixcentral/swg/selectFixes?parent=Software%20defined%20storage&product=ibm/StorageSoftware/IBM+Spectrum+Scale&release=4.2.3&platform=All&function=all

If you cannot apply the latest level of service, contact IBM Service for an efix:

- For IBM Spectrum Scale V5.0.0.0 through V5.0.4.1, reference APAR IJ22700

- For IBM Spectrum Scale V4.2.0.0 through V4.2.3.19, reference APAR IJ22689

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Acknowledgement

The vulnerability was reported to IBM by Honggang Ren of Fortinet's FortiGuard Labs

*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.

Document Location

Worldwide

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Tips

Security Bulletin: A vulnerability has been identified in IBM Spectrum Scale where an attacker can cause a denial of service (CVE-2020-4217)