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node: warn for Object.prototype.__* accessors common in security warnings #39824
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Original file line number | Diff line number | Diff line change | ||||
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@@ -3,10 +3,13 @@ | |||||
const { | ||||||
NumberParseInt, | ||||||
ObjectDefineProperty, | ||||||
ObjectGetOwnPropertyDescriptor, | ||||||
ObjectGetPrototypeOf, | ||||||
SafeMap, | ||||||
SafeWeakMap, | ||||||
StringPrototypeStartsWith, | ||||||
globalThis, | ||||||
uncurryThis, | ||||||
} = primordials; | ||||||
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const { | ||||||
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@@ -332,6 +335,61 @@ function initializeDeprecations() { | |||||
enumerable: false, | ||||||
configurable: true | ||||||
}); | ||||||
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let warnedForProto = false; | ||||||
const ObjectPrototype = ObjectGetPrototypeOf({}); | ||||||
function warnOnProto() { | ||||||
if (!warnedForProto) { | ||||||
warnedForProto = true; | ||||||
process.emitWarning('usage of Object.prototype.__* properties are a' + | ||||||
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' common security concern, use static methods on Object instead'); | ||||||
} | ||||||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Perhaps we should make these proper runtime deprecations? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I'm not opposed, is it just adding to the docs a new number to get the DEP###? There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. added to DEP doc, idk if there is a process to do instead There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Look for other DEP codes in the code and you'll see how those are emitted :-) There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Example: Lines 28 to 29 in e46c680
As soon as this is changed to emit a deprecation warning, I'll launch a CITGM run with There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. this seems difficult to wrangle without giving a unique DEP id to each accessor given the other feedback of giving more actionable feedback in #39824 (comment) |
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} | ||||||
const legacy = [ | ||||||
'__proto__', | ||||||
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'__defineGetter__', | ||||||
'__defineSetter__', | ||||||
'__lookupGetter__', | ||||||
'__lookupSetter__', | ||||||
]; | ||||||
for (let i = 0; i < legacy.length; i++) { | ||||||
const prop = legacy[i]; | ||||||
const protoDescriptor = ObjectGetOwnPropertyDescriptor( | ||||||
ObjectPrototype, | ||||||
prop); | ||||||
if (protoDescriptor && 'value' in protoDescriptor) { | ||||||
let value = protoDescriptor.value; | ||||||
const writable = protoDescriptor.writable; | ||||||
ObjectDefineProperty(ObjectPrototype, legacy[i], { | ||||||
get() { | ||||||
warnOnProto(); | ||||||
return value; | ||||||
}, | ||||||
set(v) { | ||||||
warnOnProto(); | ||||||
if (!writable) return; | ||||||
value = v; | ||||||
}, | ||||||
enumerable: false, | ||||||
configurable: true | ||||||
}); | ||||||
} else { | ||||||
const getter = uncurryThis(protoDescriptor.get); | ||||||
const setter = uncurryThis(protoDescriptor.set); | ||||||
ObjectDefineProperty(ObjectPrototype, legacy[i], { | ||||||
get() { | ||||||
warnOnProto(); | ||||||
return getter(this); | ||||||
}, | ||||||
set(value) { | ||||||
warnOnProto(); | ||||||
setter(this, value); | ||||||
}, | ||||||
enumerable: false, | ||||||
configurable: true | ||||||
}); | ||||||
} | ||||||
} | ||||||
} | ||||||
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function setupChildProcessIpcChannel() { | ||||||
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,11 @@ | ||
'use strict'; | ||
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const common = require('../common'); | ||
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process.on('warning', common.mustCall()); | ||
There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. There is a There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. done, but it seems |
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const obj = {}; | ||
// eslint-disable-next-line | ||
const _ = obj.__proto__; | ||
// eslint-disable-next-line | ||
obj.__proto__ = null; |
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