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

Security Bulletin


Summary

A vulnerability in Apache Tomcat (CVE-2020-13935) affects the IBM FlashSystem models 840 and 900.

Vulnerability Details

CVEID:   CVE-2020-13935
DESCRIPTION:   Apache Tomcat is vulnerable to a denial of service, caused by improper validation of the payload length in a WebSocket frame. By sending multiple requests with invalid payload lengths, a remote attacker could exploit this vulnerability to cause the application to enter into an infinite loop.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/185227 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Storage Node machine type and models (MTMs) affected:

  • 9840-AE1 and 9843-AE1
  • 9840-AE2 and 9843-AE2
  • 9840-AE3 and 9843-AE3
Supported storage node code versions which are affected:
  • VRMFs prior to 1.5.2.8
  • VRMFs prior to 1.6.1.3
Note: For information on IBM FlashSystem V9000 SVC code levels affected and remediated, search for the equivalent security bulletin here: IBM Support

Remediation/Fixes

MTMsVRMFAPAR  Remediation/First Fix
FlashSystem 840 MTMs:

9840-AE1 and 9843-AE1

FlashSystem 900 MTMs:

9843-UF3, 9840-AE2, 9843-AE2, 9840-AE3, and 9843-AE3

Note: AE1 systems are no longer supported.

Code fixes are now available, the minimum VRMF containing the fix depending on the code stream: 

Fixed Code VRMF: 

1.6 stream: 1.6.1.3

1.5 stream: 1.5.2.8

N/A   FlashSystem 900 fixes are available at IBM's Fix Central website. FlashSystem 840 is no longer supported.


Workarounds and Mitigations

Upgrade to the latest supported firmware. 

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

Change History

14 Apr 2021: Initial Publication

*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

[{"Business Unit":{"code":"BU054","label":"Systems w\/TPS"},"Product":{"code":"STKMQV","label":"IBM FlashSystem V9000"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"1.5.2.8, 1.6.1.3","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}},{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"STKMQB","label":"IBM FlashSystem 900"},"Component":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"1.6.1.3, 1.5.2.8","Edition":"","Line of Business":{"code":"LOB26","label":"Storage"}}]

Document Information

Modified date:
15 April 2021

UID

ibm16443365

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