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    CVE-2018-5721

    Stack-based buffer overflow in the ej_update_variables function in router/httpd/web.c on ASUS routers (when using software from https://github.com/RMerl/asuswrt-merlin) allows web authenticated attackers to execute code via a request that updates a setting. In ej_update_variables, the length of the variable action_script is not checked, as long as it includes a "_wan_if" substring.

    Published:Jan 17, 2018
    Last Modified:Nov 21, 2024
    EPS:Jan 17, 2018
    EPSS Score:0.01725
    CVSS Score:8.8

    Affected Products

    Vendor
    Asuswrt-merlin
    Product
    Asuswrt-merlin

    Exploits

    http://www.w0lfzhang.com/2018/01/17/ASUS-router-stack-overflow-in-http-server/http://www.w0lfzhang.com/2018/01/17/ASUS-router-stack-overflow-in-http-server/

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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