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url: improve url.parse() compliance with WHATWG URL #45011

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merged 1 commit into from
Oct 17, 2022

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@Trott Trott commented Oct 15, 2022

Make the url.parse() hostname parsing closer to that of WHATWG URL parsing. This mitigates for cases where hostname spoofing becomes possible if your code checks the hostname using one API but the library you use to send the request uses the other API.

Concerns about hostname-spoofing were raised and presented in excellent detail by pyozzi-toss (pyozzi@toss.im/Security-Tech Team in Toss).

Make the url.parse() hostname parsing closer to that of WHATWG URL
parsing. This mitigates for cases where hostname spoofing becomes
possible if your code checks the hostname using one API but the library
you use to send the request uses the other API.

Concerns about hostname-spoofing were raised and presented in excellent
detail by pyozzi-toss (pyozzi@toss.im/Security-Tech Team in Toss).
@nodejs-github-bot nodejs-github-bot added needs-ci PRs that need a full CI run. url Issues and PRs related to the legacy built-in url module. labels Oct 15, 2022
@Trott Trott added the request-ci Add this label to start a Jenkins CI on a PR. label Oct 15, 2022
@github-actions github-actions bot removed the request-ci Add this label to start a Jenkins CI on a PR. label Oct 15, 2022
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Trott commented Oct 15, 2022

Although this could be considered a semver-major breaking change, I'd argue this is a bugfix as the changed behavior would be very much for edge cases only and the current behavior seems not-intuitive and wrong. It is difficult to imagine a legitimate use case that would depend on it. Out of caution, though, we should run CITGM.

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💯

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anonrig commented Oct 15, 2022

@nodejs/url

@Trott Trott added author ready PRs that have at least one approval, no pending requests for changes, and a CI started. and removed author ready PRs that have at least one approval, no pending requests for changes, and a CI started. labels Oct 15, 2022
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Trott commented Oct 15, 2022

code > 127;

// Invalid host character
const isValid = (code !== CHAR_FORWARD_SLASH &&
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I think this is now too lax. It allows code points like U+005E (^), or U+007C (|) forbidden by the URL Standard.

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Before and after this change url.parse() returns the same result for foo.com^bar.com and foo.com|bar.com. (I agree, though, that it would be better if it threw errors in those cases like it does for WHATWG URL, but that's probably a subsequent change. Small changes to url.parse() will make it easier to back out if we mess up and break something in the ecosystem.)

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This is done in #45046.

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Trott commented Oct 15, 2022

CITGM results look good to me

@Trott Trott added author ready PRs that have at least one approval, no pending requests for changes, and a CI started. commit-queue Add this label to land a pull request using GitHub Actions. labels Oct 15, 2022
@nodejs-github-bot nodejs-github-bot removed the commit-queue Add this label to land a pull request using GitHub Actions. label Oct 17, 2022
@nodejs-github-bot nodejs-github-bot merged commit a8225dd into nodejs:main Oct 17, 2022
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@Trott Trott deleted the toss-1 branch October 18, 2022 01:05
RafaelGSS pushed a commit that referenced this pull request Nov 1, 2022
Make the url.parse() hostname parsing closer to that of WHATWG URL
parsing. This mitigates for cases where hostname spoofing becomes
possible if your code checks the hostname using one API but the library
you use to send the request uses the other API.

Concerns about hostname-spoofing were raised and presented in excellent
detail by pyozzi-toss (pyozzi@toss.im/Security-Tech Team in Toss).

PR-URL: #45011
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
@RafaelGSS RafaelGSS mentioned this pull request Nov 1, 2022
RafaelGSS pushed a commit that referenced this pull request Nov 10, 2022
Make the url.parse() hostname parsing closer to that of WHATWG URL
parsing. This mitigates for cases where hostname spoofing becomes
possible if your code checks the hostname using one API but the library
you use to send the request uses the other API.

Concerns about hostname-spoofing were raised and presented in excellent
detail by pyozzi-toss (pyozzi@toss.im/Security-Tech Team in Toss).

PR-URL: #45011
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
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ljharb commented Nov 19, 2022

Could this be the cause of #45514?

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Trott commented Nov 19, 2022

Could this be the cause of #45514?

Reverting #45012 but leaving this in place fixes that bug for me locally, so I don't think this one is the cause.

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danielleadams pushed a commit that referenced this pull request Dec 30, 2022
Make the url.parse() hostname parsing closer to that of WHATWG URL
parsing. This mitigates for cases where hostname spoofing becomes
possible if your code checks the hostname using one API but the library
you use to send the request uses the other API.

Concerns about hostname-spoofing were raised and presented in excellent
detail by pyozzi-toss (pyozzi@toss.im/Security-Tech Team in Toss).

PR-URL: #45011
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
danielleadams pushed a commit that referenced this pull request Dec 30, 2022
Make the url.parse() hostname parsing closer to that of WHATWG URL
parsing. This mitigates for cases where hostname spoofing becomes
possible if your code checks the hostname using one API but the library
you use to send the request uses the other API.

Concerns about hostname-spoofing were raised and presented in excellent
detail by pyozzi-toss (pyozzi@toss.im/Security-Tech Team in Toss).

PR-URL: #45011
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
danielleadams pushed a commit that referenced this pull request Jan 3, 2023
Make the url.parse() hostname parsing closer to that of WHATWG URL
parsing. This mitigates for cases where hostname spoofing becomes
possible if your code checks the hostname using one API but the library
you use to send the request uses the other API.

Concerns about hostname-spoofing were raised and presented in excellent
detail by pyozzi-toss (pyozzi@toss.im/Security-Tech Team in Toss).

PR-URL: #45011
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
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