PoC Exploit Code Released for Citrix ACD and Gateway Remote Code Execution Vulnerability

Citrix remote code execution vulnerability was published last month, the vulnerability can be tracked as CVE-2019-19781.

It may create a serious threat for organizations deployed with Citrix Application Delivery Controller and gateway.

An advisory was released by Citrix detailing the configuration changes to mitigate the vulnerability. The following are the affected versions.

  • Citrix ADC and Citrix Gateway version 13.0 all supported builds
  • Citrix ADC and NetScaler Gateway version 12.1 all supported builds
  • Citrix ADC and NetScaler Gateway version 12.0 all supported builds
  • Citrix ADC and NetScaler Gateway version 11.1 all supported builds
  • Citrix NetScaler ADC and NetScaler Gateway version 10.5 all supported builds

Citrix believed to be used in more than 80,000 companies around the globe, the vulnerability could pose a serious threat for organizations.

Attackers Scan For Vulnerability

A couple of days before researchers observed that attackers started scanning for the vulnerability, the scans include simple to dangerous requests.

Citrix Remote Code Execution – PoC Published

A Security researchers group with handle projectzeroindia published the first working exploit code for the vulnerability.

Following that TrustedSec published the exploit code, TrustedSec said that they have the tool developed earlier but they opted to have private, as other researchers published code, they too released.

MDSsec released a video demonstration explaining how the vulnerability can be exploited, but the code was not published.

Shodan has added detection for the Citrix vulnerability (CVE-2019-19781).

After the PoC code published a huge spike detected on honeypots, attackers started using public exploits to install backdoors.

Gurubaran

Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Recent Posts

Hackers Exploit Cloudflare Tunnel Infrastructure to Deploy Multiple Remote Access Trojans

The Sekoia TDR (Threat Detection & Research) team has reported on a sophisticated network infrastructure…

5 hours ago

Threat Actors Leverage npm and PyPI with Impersonated Dev Tools for Credential Theft

The Socket Threat Research Team has unearthed a trio of malicious packages, two hosted on…

5 hours ago

Hackers Exploit Legitimate Microsoft Utility to Deliver Malicious DLL Payload

Hackers are now exploiting a legitimate Microsoft utility, mavinject.exe, to inject malicious DLLs into unsuspecting…

7 hours ago

Cybercriminals Exploit Network Edge Devices to Infiltrate SMBs

Small and midsized businesses (SMBs) continue to be prime targets for cybercriminals, with network edge…

7 hours ago

Criminal IP to Showcase Advanced Threat Intelligence at RSAC™ 2025

Joining Criminal IP at Booth S-634 | South Expo, Moscone Center | April 28 –…

7 hours ago

TP-Link Router Vulnerabilities Allow Attackers to Execute Malicious SQL Commands

Cybersecurity researchers have uncovered critical SQL injection vulnerabilities in four TP-Link router models, enabling attackers…

8 hours ago