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undefsafe@0.0.2 vulnerabilities

Undefined safe way of extracting object properties

  • latest version

    2.0.5

  • latest non vulnerable version

    2.0.5

  • first published

    12 years ago

  • latest version published

    4 years ago

  • licenses detected

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    Direct Vulnerabilities

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

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    VulnerabilityVulnerable Version
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    Prototype Pollution

    undefsafe is a Simple function for retrieving deep object properties without getting "Cannot read property 'X' of undefined".

    Affected versions of this package are vulnerable to Prototype Pollution. The a function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

    PoC by JHU System Security Lab

    var a = require("undefsafe");
var payload = "__proto__.toString";
a({},payload,"JHU");
console.log({}.toString);

    How to fix Prototype Pollution?

    Upgrade undefsafe to version 2.0.3 or higher.

    <2.0.3
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