Tag Archives: Citrix

NetScaler ADC and NetScaler Gateway vulnerabilities CVE-2023-6548 and CVE-2023-6549

[German]Administrators of a Citrix NetScaler ADC or a Citrix NetScaler Gateway should take action. Manufacturer Citrix has published a security advisory regarding the two vulnerabilities CVE-2023-6548 and CVE-2023-6549 in the above-mentioned products on January 16, 2024. One vulnerability allows DDoS … Continue reading

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FYI: Citrix ShareFile worldwide down (24, Aug. 2023)

Brief information for administrators who are responsible for Citrix ShareFile. David M. just emailed me about a worldwide outage (thanks for that). He noted that this afternoon (8/24/2023) the connection to Citrix Sharefile became slower and slower. Then the connection … Continue reading

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How to find weak passwords in Active Directory and eliminate them with PowerShell

[Sponsored Post]Weak or compromised passwords are a known gateway for attackers. If you are able to identify which users in Active Directory (AD) are threatened by this, then PowerShell can help to remedy it. However, PowerShell scripts cannot eliminate basic AD deficits, other tools are needed for this. More ...

Citrix: FSLogix causes logon and logoff errors

[German]Are there sudden login problems or errors when logging out of a session under Citrix VDI? If FSLogix is used and it uses cloud cache locations for profiles or ODFC containers along with App Layering Elastic Layers, this may be … Continue reading

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CISA warns: Citrix NetScaler ADC is under attack via CVE-2023-3519

[German]The U.S. cybersecurity agency CISA is warning administrators of Citrix NetScaler ADC installations. Threat actors have begun exploiting the NetScaler ADC vulnerability CVE-2023-3519, disclosed a few days ago, to implant webshells. Administrators should look for signs of compromise. Kompromittierung suchen. … Continue reading

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Critical RCE Vulnerability in Citrix NetScaler ADC and Citrix Gateway

[German]Brief warning to administrators of Citrix NetScaler ADC and Citrix Gateway. The vendor has issued a security advisory warning of a critical remote code execution vulnerability in the products. The vendor has released updates for the affected products, which administrators … Continue reading

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Citrix Workspace App 2203: MSEdgewebview2 causes high resource usage and performance issues

[German]Brief note for administrators of Citrix Workspace App 2203: Build 2203 of the Citrix Workspace App in question seems to cause high resource utilization and thus performance problems under Windows. [Addendum: It's not clear to me, if version 2203 LTSC … Continue reading

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Citrix Security Updates (Feb. 2023) and Issues with the Citrix App

[German]Another addendum from this week regarding the manufacturer Citrix. Citrix has issued a security bulletin for the vulnerabilities CVE-2023-24484 and CVE-2023-24485 in the Citrix Workspace App for Windows. So administrators using the Workspace app should update. In addition, a blog … Continue reading

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Do we need RDS licenses for Citrix Virtual App/Desktop environments?

Do we actually need Microsoft RDS licenses if we run an environment with Citrix Virtual App/Desktop? Citrix has discussed this in the article Do We Need RDS Licenses For Citrix Virtual App/Desktop Environment. Short answer: yes, you need both Citrix … Continue reading

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Thousands unpatched Citrix servers vulnerable via critical vulnerabilities

[German]Citrix has been releasing security updates for critical vulnerabilities in Citrix ADC and gateway products and issuing security alerts for them over the past few months. However, it appears that thousands of Citrix ADCs and Citrix Gateways are vulnerable with … Continue reading

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How to log off disconnected Citrix sessions after 1 hour via power shell

[German]A short tip for administrators of Citrix solutions (Citrix Virtual Apps and Desktops Service). Sometimes administrators are need to log off users whose sessions have been in disconnected state for a long time. There is a PowerShell solution from Citrix … Continue reading

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