Friday, December 8, 2023

37 Vulnerabilities Found in 4 Popular Open-Source VNC Remote Access Software

Researchers found 37 vulnerabilities in four common open-source VNC remote desktop applications that exist since 1999. These vulnerabilities allow attackers to compromise the targeted systems remotely.

According to Kaspersky’s analysis, more than 600,000 VNC servers accessed remotely over the Internet, based on the data collected using the Shodan search engine.

37 Vulnerabilities

37 vulnerability discovered with four VNC components that include ten in LibVNC, four in TightVNC 1.X, one in TurboVNC and 22 in UltraVNC.

The VNC applications are available in both free and commercial versions, they are compatible with operating systems like Windows, Linux, macOS, and Android.

VNC applications contain two components one to be deployed in the server and next with the client machine that used to access the server.

Kaspersky researchers found vulnerabilities in both the server and client components, linked to incorrect memory usage that leads to malfunctions and denial of service.

In some extensive cases, the vulnerabilities let attackers gain unauthorized access to the device or to deploy malware on the victim machine.

Following are the possible attack vectors

  • An attacker is on the same network with the VNC server and attacks it to gain the ability to execute code on the server with the server’s privileges.
  • A user connects to an attacker’s ‘server’ using a VNC client and the attacker exploits vulnerabilities in the client to attack the user and execute code on the user’s machine.

The bugs have been reported to the developers and most of them have been fixed already, except TightVNC 1.x which was no longer supported. Developers recommended using TightVNC 2.X versions.

Researchers recommended monitoring the remote access programs in your infrastructure, check the devices connecting remotely and recommend using strong passwords.

Do not establish a connection with untrusted or untested VNC servers and to use specialized security solutions for industrial automation systems.

You can follow us on LinkedinTwitterFacebook for daily Cybersecurity and hacking news updates.


Latest articles

Exploitation Methods Used by PlugX Malware Revealed by Splunk Research

PlugX malware is sophisticated in evasion, as it uses the following techniques to avoid...

TA422 Hackers Attack Organizations Using Outlook & WinRAR Vulnerabilities

Hackers exploit Outlook and WinRAR vulnerabilities because these widely used software programs are lucrative...

Bluetooth keystroke-injection Flaw: A Threat to Apple, Linux & Android Devices

An unauthenticated Bluetooth keystroke-injection vulnerability that affects Android, macOS, and iOS devices has been...

Atlassian Patches RCE Flaw that Affected Multiple Products

Atlassian has been discovered with four new vulnerabilities associated with Remote Code Execution in...

Reflectiz Introduces AI-powered Insights on Top of Its Smart Alerting System

Reflectiz, a cybersecurity company specializing in continuous web threat management, proudly introduces a new...

SLAM Attack Gets Root Password Hash in 30 Seconds

Spectre is a class of speculative execution vulnerabilities in microprocessors that can allow threat...

Akira Ransomware Exploiting Zero-day Flaws For Organization Network Access

The Akira ransomware group, which first appeared in March 2023, has been identified as...

Endpoint Strategies for 2024 and beyond

Converge and Defend

What's the pulse of Unified Endpoint Management and Security (UEMS) in Europe? Join us live to uncover the strategies that are defining endpoint security in the region.

Related Articles