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HDX - Improper Neutralization of Special Elements used in an OS Command

Vulnerability Summary

A critical vulnerability has been discovered in the Poly shell (psh) functionality on the HDX’s diagnostics port (port tcp/23). This vulnerability could allow a remote attacker to execute arbitrary code on the HDX, which could lead to compromise of the system.  



Last Update: 3/14/2022
Initial Public Release: 11/15/2017
Advisory ID:  PLYTV17-07

Product Affected
HDX 4000

Prior to 3.1.11 hotfix

3.1.11 hotfix and above
HDX 6000

Prior to 3.1.11 hotfix

3.1.11 hotfix and above
HDX 7000

Prior to 3.1.11 hotfix

3.1.11 hotfix and above
HDX 8000

Prior to 3.1.11 hotfix

3.1.11 hotfix and above
HDX 9000

Prior to 3.1.11 hotfix

3.1.11 hotfix and above

Poly recommends customers upgrade to firmware build 3.1.12 or later.



Poly recommends following standard best practices for Unified Communications, as detailed in our best practices paper.


Any customer using an affected system who is concerned about this vulnerability within their deployment should contact Poly Technical Support(888) 248-4143, (916) 928-7561, or visit the Poly Support Site.


Revision History
1.0 11/15/2017 Initial Release
1.1 11/15/2017 Updated publication with Hotfix availability
1.2 11/24/2017 Updated publication with GA build availability
2.0 3/14/2022 Format Changes

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