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    Unicode characters that get normalized into path traversal characters

    Chrome logo 12

    This vector performs normalization and compares to see if the characters get normalized into path traversal characters

    Created by: hackvertor

    Created on: Thursday, December 12, 2024 at 12:54:59 PM

    Updated on: Saturday, December 21, 2024 at 2:00:34 PM

    Vector type: JS

    Vector charset: UTF-8

    Code used before fuzz:
    const charsToCheck = ["\\","/","."];
const normalizationForms = ["NFKC", "NFC", "NFD", "NFKD"];
    Template used:
    $[i] > 0x7f && normalizationForms.forEach(form => {
    const normalized = String.fromCodePoint($[i]).normalize(form);
    for(let charToCheck of charsToCheck) {
       if(charToCheck === normalized) {
            log(String.fromCodePoint($[i])+"("+form+")"+"="+charToCheck);
        }
     }
})
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    Sample payloads

    0 > 0x7f && normalizationForms.forEach(form => {
    const normalized = String.fromCodePoint(0).normalize(form);
    for(let charToCheck of charsToCheck) {
       if(charToCheck === normalized) {
            alert(String.fromCodePoint(0)+"("+form+")"+"="+charToCheck);
        }
     }
})

    Fuzz results

    Chrome logo
    Chrome 131.0.0.0 desktop macOS 10.15.7

    Updated

    Thu Dec 12 2024
    Found 12 results
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