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KB44891 - Process snapshot gets created for Guacd when Basic HTML5 is configured.

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Information

 
Last Modified Date10/4/2021 11:50 AM
Synopsis
This article describes an issue where Guacd program crashes when certain configurations are set on the backend/terminal server and Pulse Connect Secure (PCS).
Problem or Goal
The following table shows the combination that would result in Guacd program crash.
 
 Target machine Authentication -  CredSSP SettingsPCS (Pulse Connect Secure)Basic HTML5
CredSSP Disabled
 
EncryptionStandard RDP encryptionResults in Process Snapshot
NLANo issue.
TLSResults in Process Snapshot
Allow the server to chooseNo issue.
CredSSP (Forced update clients) EncryptionStandard RDP encryptionResults in Process Snapshot
NLAResults in Process Snapshot
TLSResults in Process Snapshot
Allow the server to chooseResults in Process Snapshot

CredSSP (Mitigated)

EncryptionStandard RDP encryptionResults in Process Snapshot
NLANo issue.
TLSResults in Process Snapshot
Allow the server to chooseNo issue.
CredSSP (Vulnerable)EncryptionStandard RDP encryptionResults in Process Snapshot
NLANo issue.
TLSResults in Process Snapshot
Allow the server to chooseNo issue.
Note:
  • This crash does not cause any user End-User impact.
  • The encryption can be verified on the Admin UI under Users -> Resource Profile -> HTML5 Access -> Choose the "Resource Profile" -> Bookmark -> Choose the "Bookmark" -> Other Settings -> Encryption.
  • This condition is true for End-user initiated bookmarks as well.

 
Cause
Solution
We strongly recommend moving to Advanced HTML5 solution as all these combinations work fine without resulting in a crash.
Related Links
Attachment 1 
Created ByRaghu Kumar

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