Several security issues have been identified in Citrix Hypervisor 8.2 LTSR CU1.  These are:

A malicious privileged user in a guest VM working in collaboration with a malicious privileged user in another guest VM can cause the host to crash or become unresponsive.
This issue has the following CVE identifier:

• CVE-2022-33748

A malicious unauthenticated user on the management network may be able to cause the management service on the host to crash or become unresponsive.
This issue has the following CVE identifier:

• CVE-2022-33749

Some recent Intel CPUs execute certain instructions with data operand dependent timing that may allow an attacker to perform a timing-based side-channel attack.  The update described below enables data operand independent timing on those CPUs. 
 

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Instructions

Citrix has released hotfixes to address these issues. Citrix recommends that affected customers install these hotfixes as their patching schedule allows.  The hotfixes can be downloaded from the following locations:
Citrix Hypervisor 8.2 LTSR CU1: CTX465169 – https://support.citrix.com/article/CTX465169 and CTX466065 – https://support.citrix.com/article/CTX466065
 

Date	Change
2022-10-11	Initial Publication
2022-10-11	Spelling error corrected