Thursday, July 18, 2024
EHA

Researchers Noticed a Peak in VNC Attacks – Over 8,000 Servers Exposed Online without a Password

Over 8,000 VNC endpoints have been discovered by researchers at Cyble security firm to be exposed to the internet. Threat actors can easily gain access to internal networks by accessing and using these exposed VNC endpoints without any authentication.

VNC is designed to help users connect to a system that requires monitoring or adjustment to help them communicate over a network. Using a network connection, VNC enables remote users to control their computers using RFB over the internet.

There is a possibility that these endpoints can act as entry points for unauthorized users and threat actors if they are not properly secured with a strong password. While the systems behind the exposed VNCs may deviate depending on the type of systems behind them.

Exposed VNCs

It was discovered that more than 8,000 servers were accessible over the internet. These servers are connected to the internet through remote VNC connections without passwords.

It is important to note that the majority of exposed instances come from China and Sweden. United States, Spain, and Brazil rounded out the top five countries most affected by unprotected VNCs, with significant volumes of such connections.

Moreover, several exposed VNC instances have been detected to be associated with industrial control systems, as well. At the same time, there should be no internet exposure to these VNC instances.

There have been several cases of exposed VNC connections being used by industrial control systems to control pumps on remote SCADA systems in unnamed manufacturing units.

VNC servers are usually attempted to be accessed from the Netherlands, Russia, and the United States, which are at the top of the list.

VNC Access is in High Demand

It is common for hackers to post on hacker forums that they are looking for access to critical networks via VNCs that are cracked or exposed. Depending on the circumstances, this type of entry could be used in order to infiltrate deeper into a network as a security breach.

This investigation only focused on instances that unmuted the authentication layer completely, which raises another concern over VNC security.

The amount of potentially vulnerable instances would be much greater if all the unsecured servers whose passwords are easy to crack were included. Moreover, VNC administrators should avoid directly exposing servers to the internet when using VNC.

Sponsored: Secure Microsoft Office 365 with Perimeter 81 and Azure AD Conditional Access
Website

Latest articles

Volcano Demon Group Attacking Organizations With LukaLocker Ransomware

The Volcano Demon group has been discovered spreading a new ransomware called LukaLocker, which...

Resonance Security Launches Harmony to Monitor and Detect Threats to Web2 and Web3 Apps

Quick take:Harmony is the fourth cybersecurity application Resonance developed to address the disconnect in...

Beware! of New Phishing Tactics Mimic as HR Attacking Employees

Phishing attacks are becoming increasingly sophisticated, and the latest strategy targeting employees highlights this...

MirrorFace Attacking Organizations Exploiting Vulnerabilities In Internet-Facing Assets

MirrorFace threat actors have been targeting media, political organizations, and academic institutions since 2022,...

HardBit Ransomware Using Passphrase Protection To Evade Detection

In 2022, HardBit Ransomware emerged as version 4.0. Unlike typical ransomware groups, this ransomware...

New Poco RAT Weaponizing 7zip Files Using Google Drive

The hackers weaponize 7zip files to pass through security measures and deliver malware effectively.These...

New ShadowRoot Ransomware Attacking Business Via Weaponized PDF’s

X-Labs identified basic ransomware targeting Turkish businesses, delivered via PDF attachments in suspicious emails...
Guru baran
Guru baranhttps://gbhackers.com
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.

Free Webinar

Low Rate DDoS Attack

9 of 10 sites on the AppTrana network have faced a DDoS attack in the last 30 days.
Some DDoS attacks could readily be blocked by rate-limiting, IP reputation checks and other basic mitigation methods.
More than 50% of the DDoS attacks are employing botnets to send slow DDoS attacks where millions of IPs are being employed to send one or two requests per minute..
Key takeaways include:

  • The mechanics of a low-DDoS attack
  • Fundamentals of behavioural AI and rate-limiting
  • Surgical mitigation actions to minimize false positives
  • Role of managed services in DDoS monitoring

Related Articles