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HomeTopics 4Network Security90,000 D-Link NAS Devices Under Attack: Patch Now or Face Takeover Risk

90,000 D-Link NAS Devices Under Attack: Patch Now or Face Takeover Risk

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Attention home cloud storage users! Over 90,000 D-Link Network Attached Storage (NAS) devices are currently vulnerable to a critical security exploit. This puts sensitive data stored on these devices at risk of unauthorized access, encryption, or deletion.

Let’s delve into the details of this attack, the potential consequences, and how you can protect your data if you own a vulnerable D-Link NAS device.

Exposed Backdoor: A Recipe for Disaster

Security researchers have identified a critical vulnerability (CVE-2024-3273) in several D-Link NAS models, including the DNS-320L, DNS-327L, DNS-340L, and DNS-325. This vulnerability stems from a backdoor account with hardcoded credentials embedded within the device’s firmware. Hackers can potentially exploit this backdoor to gain remote access to the NAS device, steal or encrypt your data, or even install malware that could spread across your network.

D-Link Confirms Vulnerability, Patch Not Available

D-Link has acknowledged the vulnerability and issued a security advisory. Unfortunately, the affected NAS models have reached their end-of-life (EOL) and are no longer supported by D-Link. This means no security patches will be released to address this critical vulnerability.

10 Actionable Steps to Secure Your D-Link NAS (if applicable)

If you own a D-Link NAS model listed above (DNS-320L, DNS-327L, DNS-340L, or DNS-325), here are 10 critical steps to take:

  1. Disconnect the NAS from the internet: Immediately disconnect your NAS device from the internet to prevent remote attackers from exploiting the vulnerability.
  2. Backup your data: If possible, create a complete backup of your data stored on the NAS. Consider storing the backup on a separate, secure device.
  3. Consider migrating to a new NAS: Given the lack of security updates, strongly consider migrating your data to a new, supported NAS device from a reputable vendor with a strong commitment to security patches.
  4. Change NAS admin credentials: If you plan to continue using the vulnerable NAS (not recommended), change the administrator password for the NAS immediately. Use a strong, unique password and enable two-factor authentication (2FA) if available.
  5. Disable remote access: While your NAS is disconnected from the internet, consider disabling remote access features if you don’t absolutely need them. This reduces the attack surface for potential exploits.
  6. Scan for malware: If you continue using the vulnerable NAS, run a comprehensive malware scan on the device to identify any potential infections.
  7. Stay informed: Keep yourself updated on the latest cybersecurity threats and vulnerabilities. Subscribe to reputable security blogs or advisories.
  8. Invest in a VPN (Optional): If you must access your NAS remotely after taking it offline, consider using a reputable VPN service to add an extra layer of security.
  9. Prioritize strong passwords: Always use strong, unique passwords for all your online accounts, including your NAS device.
  10. Be cautious of suspicious links: Phishing emails can be used to trick you into clicking malicious links that could compromise your NAS or other devices.

Conclusion

The D-Link NAS vulnerability highlights the importance of using up-to-date hardware and software. If you rely on a NAS device for your home cloud storage, ensure it comes from a reputable vendor with a proven track record of providing security updates. By following these recommendations and prioritizing cybersecurity best practices, you can significantly reduce the risk of falling victim to similar attacks in the future.

Ouaissou DEMBELE
Ouaissou DEMBELEhttps://cybercory.com
Ouaissou DEMBELE is an accomplished cybersecurity professional and the Editor-In-Chief of cybercory.com. He has over 10 years of experience in the field, with a particular focus on Ethical Hacking, Data Security & GRC. Currently, Ouaissou serves as the Co-founder & Chief Information Security Officer (CISO) at Saintynet, a leading provider of IT solutions and services. In this role, he is responsible for managing the company's cybersecurity strategy, ensuring compliance with relevant regulations, and identifying and mitigating potential threats, as well as helping the company customers for better & long term cybersecurity strategy. Prior to his work at Saintynet, Ouaissou held various positions in the IT industry, including as a consultant. He has also served as a speaker and trainer at industry conferences and events, sharing his expertise and insights with fellow professionals. Ouaissou holds a number of certifications in cybersecurity, including the Cisco Certified Network Professional - Security (CCNP Security) and the Certified Ethical Hacker (CEH), ITIL. With his wealth of experience and knowledge, Ouaissou is a valuable member of the cybercory team and a trusted advisor to clients seeking to enhance their cybersecurity posture.

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