Tag Archives: Citrix

Citrix Security Updates (June 2021)

[German]A brief note for administrators who deal with Citrix products. The manufacturer has released several security bulletins including security updates for its products on June 8 and 9, 2021. There is a Citrix Hypervisor Security Update, Citrix Cloud Connector Security … Continue reading

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Warning: DDoS attacks on Citrix NetScaler (ADC)

[German]A brief information for Citrix NetScaler administrators. Now also CERT-Bund warns about worldwide UDP:443 (EDT) accesses to Citrix Netscaler gateways. Citrix has published a workaround. Advertising

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Cisco AnyConnect VPN 0-day exploit public available

[German]Cisco hat vor wenigen Stunden eine Zero-Day-Schwachstelle in der Cisco AnyConnect Secure Mobility Client-Software bekannt gegeben. Zudem gibt es einen öffentlich zugänglichem Proof-of-Concept-Angriffscode, wie der Hersteller einräumte. Advertising

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Patches for Citrix security vulnerabilities (Sept. 2020)

[German]Citrix has already issued a security bulletin regarding vulnerabilities and security updates for Citrix Application Delivery Controller, Citrix Gateway and Citrix SD-WAN WANOP appliance on September 18, 2020. Advertising

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Microsoft Defender blocks Citrix services as Trojan

[German]Currently, there is a problem that Microsoft Defender detects Citrix services as Trojans after an update and deactivates these services. But there is a workaround, which is described in a support article. Advertising

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Why ISL Online: Critical factors when choosing a remote desktop solution

[Sponsored Post]In the rapidly evolving IT world, choosing the right remote desktop software is critical for organizations that value security, ease of use and reliability. One provider of secure remote access that has been on the market since 2001 is ISL Online, which presents some considerations for choosing such software below. More ...


Vulnerabilities in Citrix ADC, Gateway & SD-Wan, patch asap

[German]There are critical vulnerabilities in various Citrix products. The vendor has released security updates for Citrix Application Delivery Controller, Citrix Gateway and Citrix SD-WAN WANOP appliance. Administrators should urgently install the updates. Advertising

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Tip: Citrix StoreFront and SSL Certificates

A little tip for people who work with Citrix StoreFront and want to secure the communication with the Delivery Controller via SSL certificates. Pay attention to the signature algorithm. Advertising

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Citrix ADC/Netscaler patches 11.1/12.0 released (01/19/2020)

[German]Citrix has released first firmware updates for Citrix ADC/Netscaler 11.1/12.0 yesterday, intended to fix the CVE-2019-19781 vulnerability. Advertising

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Further actions required for Citrix Netscaler vulnerability

[German]Another short collection for administrators who use the Citrix ADC (Application Delivery Controller, formerly Netscaler). The CVE-2019-19781 vulnerability has been exploited. In addition, other vulnerabilities and backdoors have been discovered. As there are no firmware updates available yet (coming next … Continue reading

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PoC for Citrix ADC/Netscaler vulnerability CVE-2019-19781

[German]There is an unpatched vulnerability CVE-2019-19781 in Citrix ADC (Application Delivery Controller, formerly Netscaler) and proof of concept (PoC) exploits have been available for a few days to exploit the vulnerability – and honeypots are already under attack. I got … Continue reading

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