Fixed an issue in Citrix ADC and Citrix Gateway

Citrix has fixed an issue in ADC and Gateway which can lead to denial-of-service attacks. A malicious party could potentially potentially misuse DTLS to cause a Denial-of-Service. Abuse can only occur when DTLS is enabled. Citrix reports that limited scale attacks are currently being reported whi...

Attackers Abusing Citrix NetScaler Devices to Launch Amplified DDoS Attacks

Citrix has issued an emergency advisory warning its customers of a security issue affecting its NetScaler application delivery controller ADC devices that attackers are abusing to launch amplified distributed denial-of-service DDoS attacks against several targets. "An attacker or bots can overwhe...

Threat Advisory - DTLS Amplification Distributed Denial of Service Attack on Citrix ADC and Citrix Gateway

Threat Information Citrix is aware of a DDoS attack pattern impacting Citrix ADCand Citrix Gateway. As part of this attack, an attacker or bots can overwhelm the Citrix ADCDTLS network throughput, potentially leading to outbound bandwidth exhaustion. The effect of this attack appears to be more...

Citrix ADC NetScaler Local File Inclusion Exploit

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Citrix ADC NetScaler - Local File Inclusion Metasploit', 'Description' = % The remote device is affected by multiple vulnerabilities. An...

Citrix ADC NetScaler Local File Inclusion

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Citrix ADC NetScaler - Local File Inclusion Metasploit', 'Description' = % The remote device is affected by multiple vulnerabilities. An...

Citrix ADC NetScaler - Local File Inclusion (Metasploit)

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Citrix ADC NetScaler - Local File Inclusion Metasploit', 'Description' = % The remote device is affected by multiple vulnerabilities. An...

How to change Logstream source IP to NSIP on ADC.

By default, Logstream communication from ADC to ADM uses the SNIP address to source traffic. Administrators may wish to use the NSIP for this communication. Prior to the introduction of Logstream, the IPFIX protocol used NSIP so customers may want to maintain this flow...

Citrix Application Delivery Controller, Citrix Gateway, and Citrix SD-WAN WANOP appliance Security Update

Description of Problem Multiple vulnerabilities have been discovered in Citrix ADC formerly known as NetScaler ADC, Citrix Gateway formerly known as NetScaler Gateway and Citrix SD-WAN WANOP appliance models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could result...

Citrix ADC and Citrix Gateway Security Update (CVE-2019-0140)

Description of Problem A vulnerability has been identified affecting Citrix Application Delivery Controller ADC formerly known as NetScaler ADC, and Citrix Gateway, formerly known as NetScaler Gateway, platforms which could result in privilege escalation via layer 2 network access on all network...

CVE-2019-19781 - Verification Tool

Objective The Check-CVE-2019-19781 tool will enable customers to identify AAA and Gateway endpoints on Citrix ADC and Citrix Gateway devices in their deployment that are vulnerable to CVE-2019-19781. Customers are also encouraged to run the tool upon application of the mitigation steps to ensure...

NICER Protocol Deep Dive: Internet Exposure of Citrix ADC/NetScaler

Welcome to the NICER Protocol Deep Dive blog series! When we started researching what all was out on the internet way back in January, we had no idea we'd end up with a hefty, 137-page tome of a research report. The sheer length of such a thing might put off folks who might otherwise learn a thin...

Vulnerability fixed in Citrix ADC and Citrix Gateway

Citrix has fixed a vulnerability in ADC and Gateway. The vulnerability allows a malicious party to obtain elevated privileges. obtain. The vulnerability can only be exploited from a peer switch whose Link Layer Discovery Protocol LLDP is enabled. Citrix has released updates to fix the...

SSL Renegotiation Process and Session Reuse on ADC Appliance

This article contains information about the SSL renegotiation and session reuse on a ADC appliance. SSL Renegotiation Process on a ADC Appliance The SSL renegotiation process is the new SSL handshake process over an established SSL connection. The SSL renegotiation process can establish another...

How to collect data for ADC Gateway VPN issues

To provide a comprehensive guide on how to properly collect data for issues with ADC when these issues are related to Full VPN...

Exploit for Path Traversal in Citrix Application_Delivery_Controller_Firmware

This is a Python script that exploits the CVE-2019-19781 vulnerability in Citrix Application Delivery Controller and Citrix Gateway. The script is designed to upload a malicious XML file to the vulnerable device, which will execute the code contained within, resulting in remote code execution. Th...

Citrix ADC and Citrix NetScaler Gateway Multiple Vulnerabilities (CTX281474)

The remote Citrix ADC or Citrix NetScaler Gateway device is version 11.1.x prior to 11.1-65.12, 12.1.x prior to 12.1-58.15 or 12.1-FIPS prior to 12.1-55.187 13.0.x prior to 13.0-64.35. It is, therefore, affected by multiple vulnerabilities: - A HTML injection vulnerability exists in Citrix ADC du...

Configure "-denySSLReneg" Parameter to Disable Client Side and Server Side SSL Renegotiation on ADC

This article describes the configuration and use of -denySSLReneg parameter that is recently added to Citrix ADC appliance firmware and Citrix Gateway application software...

CVE-2020-8245

Improper Input Validation on Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, Citrix SD-WAN WANOP...

CVE-2020-8246

Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, Citrix SD-WAN WANOP 11.2 before 11.2.1a, Citrix...

CVE-2020-8245

Improper Input Validation on Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix ADC and NetScaler Gateway 12.1 before 12.1-58.15, Citrix ADC 12.1-FIPS before 12.1-55.187, Citrix ADC and NetScaler Gateway 12.0, Citrix ADC and NetScaler Gateway 11.1 before 11.1-65.12, Citrix SD-WAN WANOP...