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Web Application Secure Coding Handbook resource.

Home Page: https://vladtoie.gitbook.io/secure-coding/

webappsecurity security appsecurity blueteam owasp secure-coding secure-coding-practices

secure-coding-handbook's Introduction

Secure Coding Handbook

Welcome to the Secure Coding Handbook! Here, you will find everything that I have found on secure coding: best practices, analyzing, and, of course, patching code-related vulnerabilities. All of the enumerated attacks and defensive techniques are strictly related to web applications. (for now :) )

Handbook structure:

{% content-ref url="resources.md" %} resources.md {% endcontent-ref %}

{% content-ref url="broken-reference" %} Broken link {% endcontent-ref %}

{% content-ref url="broken-reference" %} Broken link {% endcontent-ref %}

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{% content-ref url="broken-reference" %} Broken link {% endcontent-ref %}

{% content-ref url="broken-reference" %} Broken link {% endcontent-ref %}

Spotted a bug?

Making mistakes is human nature, fortunately. Please note that I am by no means an expert and should you find something that is totally erroneous or deviated from the subject, please create an issue here.

Want to contribute?

Sure thing! Message me on Twitter @VladToie, or simply write a pull request in the Secure-Coding-Handbook repository.

You can also buy me a Pizza so I wouldn't have to cook it myself, and write more guides in that time =D

{% embed url="https://www.buymeacoffee.com/bobi" %}

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secure-coding-handbook's Issues

Authentication example ignore timing attack

Hello,
I am a bit concerned by the example presented.
Indeed the hash function is likely to take some time and therefore even if the email is not leaked by the error message, it is instead leaked by the difference of time the server took to respond.
A better way in my opinion would be to compute an hash in all cases like:

// Validating the existence of a user with the specified email.
const existingUser = await User.findOne({ email });
if (!existingUser) {
    let _ = await bcrypt.compare(password, "fake password used to counter timing attack");
    return res
        .status(401)
        .json({ errorMessage: "Invalid email or password." });
}

// Validating the password attributed to that User object with the passwordHash
// from the database.
const passwordCorrect = await bcrypt.compare(password, existingUser.passwordHash);
if (!passwordCorrect) {
    return res
        .status(401)
        .json({ errorMessage: "Invalid email or password." });
}

I understand the extra line can undermine the point about error messsages which is the crucial first step, but I feel like at least an extra note about it should be added at the end.

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