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Protect: no empty headers#14859

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roccotripaldi merged 2 commits intomasterfrom
fix/protect-empty-trusted-header
Mar 5, 2020
Merged

Protect: no empty headers#14859
roccotripaldi merged 2 commits intomasterfrom
fix/protect-empty-trusted-header

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@roccotripaldi roccotripaldi commented Mar 3, 2020 •
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Fixes an issue where sending empty IP-related headers can result in false positives for a misconfigured server.

Changes proposed in this Pull Request:

  • There are some IP related headers that Protect gives priority, example GD_PHP_HANDLER
  • In some cases, this header exists, but it's empty
  • When Protect tries to use an empty trusted header, it results in the module shutting off because of a perceived misconfiguration
  • This PR aims to mitigate false positives by not sending empty headers

Is this a new feature or does it add/remove features to an existing part of Jetpack?

  • Issue is discussed more here: p9dueE-1fl-p2

Testing instructions:

  • Try spinning up a new Jurassic.ninja website
  • in wp-config.php set $_SERVER['GD_PHP_HANDLER'] = '' ( an empty string )
  • ensure that a trusted header is not set to GD_PHP_HANDLER
  • try setting $_SERVER['GD_PHP_HANDLER'] = '1.1.1.1'
  • ensure that a trusted header is set to GD_PHP_HANDLER

Proposed changelog entry for your changes:

  • None

@roccotripaldi
Protect
6c858fe 
We should never send an empty header to the Protect server.
It can result in false positives for misconfigured servers.
@roccotripaldi roccotripaldi added Bug When a feature is broken and / or not performing as intended [Feature] Protect Also known as Brute Force Attack Protection [Status] Needs Review This PR is ready for review. [Status] Needs Testing We need to add this change to the testing call for this month's release labels Mar 3, 2020
@roccotripaldi roccotripaldi added this to the 8.4 milestone Mar 3, 2020
@roccotripaldi roccotripaldi requested a review from a team March 3, 2020 01:29
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jetpackbot commented Mar 3, 2020 •
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Thank you for the great PR description!

When this PR is ready for review, please apply the [Status] Needs Review label. If you are an a11n, please have someone from your team review the code if possible. The Jetpack team will also review this PR and merge it to be included in the next Jetpack release.

Scheduled Jetpack release: April 7, 2020.
Scheduled code freeze: March 31, 2020

Generated by 🚫 dangerJS against 71dae42

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htdat commented Mar 4, 2020 •
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I tested on a Jurassic.ninja site and confirm the testing instruction above works and confirm it fixes the issue mentioned in 4372-gh-jpop-issues.

jeherve
jeherve requested changes Mar 4, 2020
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@jeherve jeherve added [Status] Needs Author Reply We need more details from you. This label will be auto-added until the PR meets all requirements. and removed [Status] Needs Review This PR is ready for review. labels Mar 4, 2020
@roccotripaldi @jeherve
Update modules/protect.php
71dae42 
Co-Authored-By: Jeremy Herve <jeremy@jeremy.hu>
jeherve
jeherve approved these changes Mar 5, 2020
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LGTM!

@jeherve jeherve added [Status] Ready to Merge Go ahead, you can push that green button! and removed [Status] Needs Author Reply We need more details from you. This label will be auto-added until the PR meets all requirements. [Status] Needs Testing We need to add this change to the testing call for this month's release labels Mar 5, 2020
@roccotripaldi roccotripaldi merged commit 7968380 into master Mar 5, 2020
@roccotripaldi roccotripaldi deleted the fix/protect-empty-trusted-header branch March 5, 2020 20:58
@matticbot matticbot added [Status] Needs Changelog and removed [Status] Ready to Merge Go ahead, you can push that green button! labels Mar 5, 2020
jeherve added a commit that referenced this pull request Mar 20, 2020
@jeherve
Changelog: add #14859
0ef8fa3
jeherve added a commit that referenced this pull request Mar 31, 2020
@jeherve
8.4 Changelog (#15075)
0eb0b35 
* Initial changelog entry

* Changelog: add #14904

* Changelog: add #14910

* Changelog: add #14913

* Changelog: add #14916

* Changelog: add #14922

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* Changelog: add #14859

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* Changelog;: add #14797

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* Changelog: add #14985

* Changelog: add #15044

* Changelog: add #15052

* Update to remove Podcast since it remains in Beta

* Changelog: add #14803

* Changelog: add #15028

* Changelog: add #15065

* Changelog:add #14886

* Changelog: add #15118

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* Changelog: add #15133

* Changelog: add #14960

* Changelog: add #15127

* Changelog: add #15056

* Copy current changelog to changelog archive.

* Clarify changelog description
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@jeherve jeherve jeherve approved these changes

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@roccotripaldi roccotripaldi

Labels

Bug When a feature is broken and / or not performing as intended [Feature] Protect Also known as Brute Force Attack Protection

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8.4

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@roccotripaldi @jetpackbot @htdat @jeherve @matticbot