Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningUpgrade node-rules
to version 5.0.0 or higher.
node-rules is a light weight forward chaining Rule Engine, written in JavaScript.
Affected versions of this package are vulnerable to Arbitrary Code Execution. The injection point is located in line 152,153. The argument rules of function fromJSON()
can be controlled by users without any sanitization.
var A = require("node-rules");
var rules = {
condition:"{}.__proto__.toString = 123",
consequence:"console.log(123)"
}
var a = new A();
a.fromJSON(rules);
console.log({}.toString)