Two vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway). Refer below for further details.
NetScaler are affected is RDP-Proxy Feature is enabled and/or Kerberos Constrained Delegation is configured!
Affected Versions
The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities:
NetScaler ADC and NetScaler Gateway 14.1 BEFORE 14.1-29.72
NetScaler ADC and NetScaler Gateway 13.1 BEFORE 13.1-55.34
NetScaler ADC 13.1-FIPS BEFORE 13.1-37.207
NetScaler ADC 12.1-FIPS BEFORE 12.1-55.321
NetScaler ADC 12.1-NDcPP BEFORE 12.1-55.321
Note: NetScaler ADC and NetScaler Gateway versions 12.1 and 13.0 are now End Of Life (EOL) and are vulnerable. Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities.
This bulletin only applies to customer-managed NetScaler ADC and NetScaler Gateway. Customers using Citrix-managed cloud services or Citrix-managed Adaptive Authentication do not need to take any action.
Summary
NetScaler ADC and NetScaler Gateway contain the vulnerabilities mentioned below
CVE ID
Description
Pre-requisites
CWE
CVSS
CVE-2024-8534
Memory safety vulnerability leading to memory corruption and Denial of Service
The appliance must be configured as a Gateway (VPN Vserver) with RDP Feature enabled ORThe appliance must be configured as a Gateway (VPN Vserver) and RDP Proxy Server Profile is created and set to Gateway (VPN Vserver) ORThe appliance must be configured as a Auth Server (AAA Vserver) with RDP Feature enabled
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CVSS v4.0 Base Score: 8.4(CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:L)
CVE-2024-8535
Authenticated user can access unintended user capabilities
The appliance must be configured as a Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) with KCDAccount configuration for Kerberos SSO to access backend resourcesOR The appliance must be configured as aAuth Server (AAA Vserver) with KCDAccount configuration for Kerberos SSO to access backend resources
CWE-440: Expected Behavior Violation
CVSS v4.0 Base Score: 5.8(CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:H/SI:H/SA:H)
What Customers Should Do
Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.
NetScaler ADC and NetScaler Gateway 14.1-29.72 and later releases
NetScaler ADC and NetScaler Gateway 13.1-55.34 and later releases of 13.1
NetScaler ADC 13.1-FIPS 13.1-37.207 and later releases of 13.1-FIPS
NetScaler ADC 12.1-FIPS 12.1-55.321 and later releases of 12.1-FIPS
NetScaler ADC 12.1-NDcPP 12.1-55.321 and later releases of 12.1-NDcPP
Note: NetScaler ADC and NetScaler Gateway versions 12.1 and 13.0 are now End Of Life (EOL) and no longer supported. Customers are recommended to upgrade their appliances to one of the supported versions that address the vulnerabilities.
CVE-2024-8534:
Customers can determine if they have an appliance configured as one of the following by inspecting their ns.conf file for the specified strings
A Gateway (VPN Vserver) with the RDP Feature enabled, enable ns feature.*rdpproxy add vpn vserver
A Gateway (VPN Vserver) with an RDP Proxy Server Profile created and set to the Gateway (VPN Vserver) add rdp serverprofile <RDP_server_name> add vpn vserver <vserver_name> -rdpServerProfileName <RDP_server_name>
An Auth Server (AAA Vserver) with the RDP Feature enabled. enable ns feature.*rdpproxy add authentication vserver
CVE-2024-8535: Customers can determine if they have an appliance configured as one of the following by inspecting their ns.conf file for the specified strings
A Gateway (SSL VPN, ICA Proxy, CVPN, RDP Proxy) with KCDAccount configuration for Kerberos SSO to access backend resources add aaa kcdaccount
An Auth Server (AAA Vserver) with KCDAccount configuration for Kerberos SSO to access backend resources add aaa kcdaccount
In addition, upon upgrading to the fixed version, customers must perform the shell commands mentioned below: nsapimgr_wr.sh -ys call=ns_aaa_flush_kerberos_tickets
Note: In case of High Availability (HA) or Cluster setup of the NetScaler appliances, the above operation should be performed after upgrading all the appliances.
A vulnerability has been discovered in Citrix Workspace app for Mac, which, if exploited, may result in a session hijack of a user who is authenticated on cloud stores.
Affected Versions:
The following supported versions of Citrix Workspace app for Mac are affected by the vulnerability: Citrix Workspace app for Mac before 2409
Summary:
CVE ID
Description
Pre-requisites
CWE
CVSS
CVE-2024-7549
Possible session hijack of a user who is authenticated on cloud store
Citrix Workspace app authenticated user using cloud store may be impacted when:Accessing SaaS/Web appOR Accessing CVAD apps or desktops using Custom Workspace URL
CWE-287: Improper Authentication
CVSS v4.0 Base Score: 6.9(CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
What Customers Should Do
Cloud Software Group strongly urges affected customers of Citrix Workspace app for Mac to install the relevant updated versions of Citrix Workspace app for Mac as soon as possible:
Aufgrund einer Umstellung vom GCM auf das FCM Protokoll (Firebase Cloud Messaging HTTP Protocol) ist ein Push für Android-Geräte welche vor dem 20. Juli 2024 registriert wurden nicht mehr möglich.
Betroffene Benutzer müssen sich neu ausrollen um wieder Push-Notifications zu erhalten. Es gibt auch keinen automatischen Migrationsweg.
Migration of Android Devices registered via GCM to FCM
Title
Migration of Android Devices registered via GCM to FCM
CTX Number
CTX691804
Article Type
Problem Solution
Created Date
4/Oct/2024
Last Modified Date
4/Oct/2024
Symptoms or Error
There is no automatic update from Azure Notification Hub or Google Push Notification Service to migrate Android clients from the FCM legacy protocol to the latest FCMv1 protocol. As a result, affected users will need to manually re-register their devices with NetScaler Gateway. Please refer to the “Re-register your Android device” Section for detailed instructions on how to complete the re-registration.
Workaround: Users can fallback to the TOTP authentication method until their devices are re-registered.
Solution
In this article we are going to share how to Migrate Android Devices registered via GCM registration template to FCM registration template
Android devices registered for the Push Notification Service before July 20, 2024, will no longer receive push notifications from September 20 2024.
This change only affects Android devices registered with the NetScaler Push Solution and does not impact iPhone devices.
Android devices registered with the NetScaler solution on or after July 20, 2024, will not be affected by this change.
Re-register your Android device
Users are required to re-register their devices with NetScaler Gateway to enable push notification functionality. Please note that different organizations may have varying methods for accessing the registration FQDN. Therefore, affected users are advised to contact their respective administrators for assistance in reaching the correct registration FQDN. Below is a sample process for re-registration.
Two vulnerabilities have been discovered in NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway).
Affected Versions:
The following supported versions of NetScaler ADC and NetScaler Gateway are affected by the vulnerabilities:
NetScaler ADC and NetScaler Gateway 14.1 before 14.1-12.35
NetScaler ADC and NetScaler Gateway 13.1 before 13.1-51.15
NetScaler ADC and NetScaler Gateway 13.0 before 13.0-92.21
NetScaler ADC 13.1-FIPS before 13.1-37.176
NetScaler ADC 12.1-FIPS before 12.1-55.302
NetScaler ADC 12.1-NDcPP before 12.1-55.302
Note: NetScaler ADC and NetScaler Gateway version 12.1 is now End Of Life (EOL) and is vulnerable.
This bulletin only applies to customer-managed NetScaler ADC and NetScaler Gateway products. Customers using Citrix-managed cloud services or Citrix-managed Adaptive Authentication do not need to take any action.
Summary:
NetScaler ADC and NetScaler Gateway contain the vulnerabilities described below.
CVE ID
Description
Pre-requisites
CWE
CVSS
CVE-2023-6548
Authenticated (low privileged) remote code execution on Management Interface
Access to NSIP, CLIP or SNIP with management interface access
CVE- 2023- 6548 only impacts the management interface. Cloud Software Group strongly recommends that network traffic to the appliance’s management interface is separated, either physically or logically, from normal network traffic. In addition, we recommend that you do not expose the management interface to the internet, as explained in the secure deployment guide. Removing such exposure to the internet greatly reduces the risk of exploitation of this issue. See NetScaler secure deployment guide ( https://docs.citrix.com/en-us/citrix-adc/citrix-adc-secure-deployment/secure-deployment-guide.html) for more information.
What Customers Should Do
Exploits of these CVEs on unmitigated appliances have been observed. Cloud Software Group strongly urges affected customers of NetScaler ADC and NetScaler Gateway to install the relevant updated versions as soon as possible.
NetScaler ADC and NetScaler Gateway 14.1-12.35 and later releases
NetScaler ADC and NetScaler Gateway 13.1-51.15 and later releases of 13.1
NetScaler ADC and NetScaler Gateway 13.0-92.21 and later releases of 13.0
NetScaler ADC 13.1-FIPS 13.1-37.176 and later releases of 13.1-FIPS
NetScaler ADC 12.1-FIPS 12.1-55.302 and later releases of 12.1-FIPS
NetScaler ADC 12.1-NDcPP 12.1-55.302 and later releases of 12.1-NDcPP
Note: NetScaler ADC and NetScaler Gateway version 12.1 is now End Of Life (EOL). Customers are recommended to upgrade their appliances to one supported version that addresses the vulnerabilities.
A vulnerability has been discovered in the customer-managed ShareFile storage zones controller which, if exploited, could allow an unauthenticated attacker to remotely compromise the customer-managed ShareFile storage zones controller.
This vulnerability affects all currently supported versions of customer-managed ShareFile storage zones controller before version 5.11.24.
This bulletin only applies to customer-managed ShareFile storage zones controllers. Customers using ShareFile-managed storage zones in the cloud do not need to take any action.
The issue has been given the following identifier:
CVE ID
Affected Products
Description
Pre-requisites
CWE
CVSS
CVE-2023-24489
Citrix Content Collaboration
Improper resource control allows unauthenticated remote compromise
Network access to the ShareFile storage zones controller
All customer-managed ShareFile storage zones controllers versions prior to the latest version 5.11.24 have been blocked to protect our customers. Customers will be able to reinstate the storage zones controller once the update to 5.11.24 is applied.
Customers should shut down any machine that was running an affected version of the storage zones controller software.
