QNAP customers have been advised that cyber attackers are targeting its network-attached storage (NAS) products with ransomware and have been encouraged to secure their devices at the earliest opportunity.
Ransomware and brute-force cyber attacks have been "widely targeting" QNAP's internet-facing NAS products, according to the manufacturer which published a products security statement on Friday.
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NAS drives that are exposed to the internet without any protection are particularly vulnerable to the attacks and users are advised to revisit their security settings to ensure devices are adequately protected.
The scale of attacks is currently unclear and QNAP also didn't specify what strain of ransomware the attackers are using, or where the attackers are based. IT Pro has contacted QNAP for additional comment.
To check if a NAS drive is vulnerable to the attacks QNAP has observed, users should open the QNAP Security Counselor on their NAS products. The NAS is at high risk if there is an artefact that reads: 'The System Administration service can be directly accessible from an external IP address via the following protocols: HTTP' on the dashboard. QNAP also has a guide for users on how to check which ports on a router are exposed to the internet.
Securing the NAS
The first step to fully protect vulnerable products from the ongoing attacks is to disable the port forwarding function of the router. This can be completed via the management interface of a user's router. Users should check their settings and disable the port forwarding setting of NAS management service port which is set at port 8080 and 433 by default.
Users should finally disable the universal plug and play (UPnP) function of their QNAP NAS product in the QTS menu in myQNAPcloud. To do this, users can navigate to the 'Auto Route Configuration' tab in the QTS menu and unselect 'Enable UPnP Port forwarding'.
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