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fixed issue#33 CVE-2022-25645 added test for it #38

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merged 2 commits into from May 3, 2022
Merged

fixed issue#33 CVE-2022-25645 added test for it #38

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5c9ebb0
fixed issue#33 CVE-2022-25645 added test for it
May 3, 2022
f96df94
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lukeed May 3, 2022
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1 change: 1 addition & 0 deletions src/merge.js
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Expand Up @@ -6,6 +6,7 @@ export function merge(a, b, k) {
}
} else {
for (k in b) {
if (k === '__proto__' || k === 'constructor' || k === 'prototype') break;
a[k] = merge(a[k], b[k]);
}
}
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10 changes: 10 additions & 0 deletions test/suites/pollution.js
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Expand Up @@ -85,5 +85,15 @@ export default function (dset) {
});
});

// Test for CVE-2022-25645 - CWE-1321
pollution('should ignore JSON.parse crafted object with "__proto__" key', () => {
let a = { b: { c: 1 } };
assert.is(a.polluted, undefined);
assert.is({}.polluted, undefined);
dset(a, "b", JSON.parse('{"__proto__":{"polluted":"Yes!"}}'));
assert.is(a.polluted, undefined);
assert.is({}.polluted, undefined);
});

pollution.run();
}