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    CVE-2021-31439

    This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Synology DiskStation Manager. Authentication is not required to exploit this vulnerablity. The specific flaw exists within the processing of DSI structures in Netatalk. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-12326.

    Published:May 21, 2021
    Last Modified:Jan 14, 2025
    EPS:May 21, 2021
    EPSS Score:0.01035
    CVSS Score:8.8

    Affected Products

    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Netatalk
    Product
    Netatalk
    Vendor
    Synology
    Product
    Diskstation Manager

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

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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