ZDI-21-277: Western Digital MyCloud PR4100 Link Resolution Information Disclosure Vulnerability
This vulnerability allows remote attackers to disclose sensitive information on affected installations of Western Digital MyCloud PR4100. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SMB and AFP services. By creating a symbolic link, an attacker can abuse the service to read arbitrary files. An attacker can leverage this vulnerability to disclose information in the context of the service account.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Western Digital My Cloud PR4100 |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-21-277?
The severity of ZDI-21-277 is considered to be critical due to its potential for remote exploitation without authentication.
How can I fix ZDI-21-277?
To fix ZDI-21-277, update the firmware of the Western Digital MyCloud PR4100 to the latest version provided by the vendor.
What systems are affected by ZDI-21-277?
ZDI-21-277 specifically affects the Western Digital MyCloud PR4100 installations.
Is authentication required to exploit ZDI-21-277?
No, authentication is not required to exploit the vulnerability identified as ZDI-21-277.
What kind of information can be disclosed due to ZDI-21-277?
ZDI-21-277 allows remote attackers to disclose sensitive information from affected installations.
- agent/references
- agent/type
- agent/softwarecombine
- agent/severity
- agent/title
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/zdi-advisory
- source/ZDI
- alias/ZDI-21-277
- alias/ZDI-CAN-12455
- alias/CVE-2021-3310
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- vendor/western digital
- canonical/western digital my cloud pr4100