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    CVE-2019-9949

    Western Digital My Cloud Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 before firmware 2.31.183 are affected by a code execution (as root, starting from a low-privilege user session) vulnerability. The cgi-bin/webfile_mgr.cgi file allows arbitrary file write by abusing symlinks. Specifically, this occurs by uploading a tar archive that contains a symbolic link, then uploading another archive that writes a file to the link using the "cgi_untar" command. Other commands might also be susceptible. Code can be executed because the "name" parameter passed to the cgi_unzip command is not sanitized.

    Published:May 23, 2019
    Last Modified:Nov 21, 2024
    EPS:May 23, 2019
    EPSS Score:0.02505
    CVSS Score:8.8

    Affected Products

    Vendor
    Westerndigital
    Product
    My Cloud
    Vendor
    Westerndigital
    Product
    My Cloud Dl2100
    Vendor
    Westerndigital
    Product
    My Cloud Dl2100 Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Dl4100
    Vendor
    Westerndigital
    Product
    My Cloud Dl4100 Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Ex2100
    Vendor
    Westerndigital
    Product
    My Cloud Ex2100 Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Ex2 Ultra
    Vendor
    Westerndigital
    Product
    My Cloud Ex2 Ultra Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Ex4100
    Vendor
    Westerndigital
    Product
    My Cloud Ex4100 Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Mirror Gen2
    Vendor
    Westerndigital
    Product
    My Cloud Mirror Gen2 Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Pr2100
    Vendor
    Westerndigital
    Product
    My Cloud Pr2100 Firmware
    Vendor
    Westerndigital
    Product
    My Cloud Pr4100
    Vendor
    Westerndigital
    Product
    My Cloud Pr4100 Firmware

    Exploits

    https://bnbdr.github.io/posts/wd/https://github.com/bnbdr/wd-rce/https://bnbdr.github.io/posts/wd/https://github.com/bnbdr/wd-rce/

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High