Description
It was discovered that the Western Digital My Cloud device before 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 attacker 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.
Published: 2018-09-18
Score: 9.8 Critical
EPSS: 92.5% High
KEV: No
Impact: n/a
Action: n/a
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Remediation

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Subscriptions

Western Digital My Cloud Dl2100 My Cloud Dl4100 My Cloud Dl4100 Firmware My Cloud Ex2 My Cloud Ex2100 My Cloud Ex2100 Firmware My Cloud Ex2 Firmware My Cloud Ex2 Ultra My Cloud Ex2 Ultra Firmware My Cloud Ex4 My Cloud Ex4100 My Cloud Ex4 Firmware My Cloud Mirror My Cloud Mirror Firmware My Cloud Mirror Gen 2 My Cloud Mirror Gen 2 Firmware My Cloud Pr2100 My Cloud Pr2100 Firmware My Cloud Pr4100 My Cloud Wdbctl0020hwt My Cloud Wdbctl0020hwt Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T10:39:59.564Z

Reserved: 2018-09-18T00:00:00.000Z

Link: CVE-2018-17153

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-09-18T15:29:00.307

Modified: 2024-11-21T03:53:58.427

Link: CVE-2018-17153

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses