Security Experts:

Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Cybercrime

Zero-Day Vulnerability Exploited in Recent Attacks on WD Storage Devices

Western Digital (WD) on Tuesday confirmed that the recent attacks targeting some of its older network-attached storage (NAS) devices involved the exploitation of a zero-day vulnerability.

Western Digital (WD) on Tuesday confirmed that the recent attacks targeting some of its older network-attached storage (NAS) devices involved the exploitation of a zero-day vulnerability.

The attacks came to light last week, with many owners of My Book Live and My Book Live Duo devices reporting on the WD Community forum that a factory reset had been initiated on their devices, which resulted in all files being erased. At the time of writing, there are nearly 900 messages in a WD Community thread on this topic.

WD says attacks are exploiting a zero-day vulnerabilityWD initially said the attackers exploited CVE-2018-18472, an old flaw that allows a remote attacker who knows the targeted device’s IP address to execute arbitrary commands with root privileges. However, after further analysis, the vendor confirmed that a zero-day vulnerability has also been exploited.

The new flaw, tracked as CVE-2021-35941, has been exploited to reset devices to factory settings. The security hole can be exploited without authentication.

CVE-2018-18472 has been exploited to install malware on vulnerable NAS devices and CVE-2021-35941 has been leveraged to reset them to factory settings — in some cases both flaws were apparently exploited by the same attacker.

Censys, a company that provides internet visibility and risk assessment products, has also analyzed the attacks and said that CVE-2018-18472 is being exploited to deliver a script that installs and executes malware, causing the compromised device to join a botnet. The company has found evidence suggesting that multiple threat actors are trying to take control of the WD devices.

Censys initially found more than 55,000 internet-exposed devices, and later noted that a vast majority of those that have not been taken offline have been compromised.

A majority of the hacked NAS devices are located in the United States, the United Kingdom and Canada.

The My Book Live and My Book Live Duo products have been discontinued, with the last firmware updates released in 2015. WD says its newer products are not impacted and claims there is no evidence that its cloud services, firmware update servers, or customer credentials have been compromised.

WD says it plans on providing data recovery services to customers impacted by this attack — the service should become available in July. The company will also offer a trade-in program to help customers upgrade to newer devices that are not vulnerable to these attacks.

Related: Western Digital Finds Replay Attack Protection Flaw Affecting Multiple Vendors

Related: QNAP Says Recently Patched Flaw Exploited in Qlocker Ransomware Attacks

Related: New Mirai Variant Delivered to Zyxel NAS Devices Via Recently Patched Flaw

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Expert Insights

Related Content

Cybercrime

Zendesk is informing customers about a data breach that started with an SMS phishing campaign targeting the company’s employees.

Cybercrime

The release of OpenAI’s ChatGPT in late 2022 has demonstrated the potential of AI for both good and bad.

Mobile & Wireless

Technical details published for an Arm Mali GPU flaw leading to arbitrary kernel code execution and root on Pixel 6.

Mobile & Wireless

Apple rolled out iOS 16.3 and macOS Ventura 13.2 to cover serious security vulnerabilities.

Cloud Security

VMware vRealize Log Insight vulnerability allows an unauthenticated attacker to take full control of a target system.

Malware & Threats

Microsoft plans to improve the protection of Office users by blocking XLL add-ins from the internet.

Mobile & Wireless

Apple’s iOS 12.5.7 update patches CVE-2022-42856, an actively exploited vulnerability, in old iPhones and iPads.

Cybercrime

A new study by McAfee and the Center for Strategic and International Studies (CSIS) named a staggering figure as the true annual cost of...