It exists that the Western Digital My Cloud device prior to 2.30.196 is affected by an authentication bypass vulnerability. An unauthenticated attacker can exploit this vulnerability to authenticate as an admin user without needing to provide a password, thereby gaining full control of the device. (Whenever an admin logs into My Cloud, a server-side session is created that is bound to the user's IP address. After the session is created, it is possible to call authenticated CGI modules by sending the cookie username=admin in the HTTP request. The invoked CGI will check if a valid session is present and bound to the user's IP address.) It was found that it is possible for an unauthenticated malicious user to create a valid session without a login. The network_mgr.cgi CGI module contains a command called "cgi_get_ipv6" that starts an admin session -- tied to the IP address of the user making the request -- if the additional parameter "flag" with the value "1" is provided. Subsequent invocation of commands that would normally require admin privileges now succeed if an attacker sets the username=admin cookie.
Vulnerable Product | Search on Vulmon | Subscribe to Product |
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western_digital my_cloud_wdbctl0020hwt_firmware |
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western_digital my_cloud_pr4100 |
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western_digital my_cloud_pr2100_firmware |
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western_digital my_cloud_mirror_gen_2_firmware |
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western_digital my_cloud_mirror_firmware |
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western_digital my_cloud_ex4100 |
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western_digital my_cloud_ex4_firmware |
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western_digital my_cloud_ex2100_firmware |
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western_digital my_cloud_ex2_ultra_firmware |
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western_digital my_cloud_ex2_firmware |
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western_digital my_cloud_dl4100_firmware |
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western_digital my_cloud_dl2100 |
Western Digital NAS machines vulnerable to hijacking via HTTP cookies
Miscreants can potentially gain admin-level control over Western Digital's My Cloud gear via an HTTP request over the network or internet. Researchers at infosec shop Securify revealed today the vulnerability, designated CVE-2018-17153, which allows an unauthenticated attacker with network access to the device to bypass password checks and login with admin privileges. This would, in turn, give the scumbag full control over the NAS device, including the ability to view and copy all stored data as...