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IBX-6185: Add file upload blocklist to security checklist #2059

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Jul 21, 2023
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IBX-6185: Add file upload blocklist to security checklist #2059

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IBX-6185: Add file upload blocklist to security checklist
glye Jul 13, 2023
9c346f5
Update security_checklist.md
glye Jul 13, 2023
084513e
Better explanation, and include default list
glye Jul 17, 2023
209372e
CI reports fixed
glye Jul 18, 2023
f41185c
Update docs/infrastructure_and_maintenance/security/security_checklis…
glye Jul 21, 2023
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Update docs/infrastructure_and_maintenance/security/security_checklis…
glye Jul 21, 2023
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MZ improvement
glye Jul 21, 2023
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Update docs/infrastructure_and_maintenance/security/security_checklis… 
…t.md

Co-authored-by: Magdalena Dziadosz <[email protected]>
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@glye @MagdalenaZuba
glye and MagdalenaZuba authored Jul 21, 2023
commit f41185c35da7c036db10a560531441c5b5748222
3 changes: 2 additions & 1 deletion docs/infrastructure_and_maintenance/security/security_checklist.md
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Expand Up @@ -98,7 +98,8 @@ See [Security advisory: EZSA-2020-002.](https://developers.ibexa.co/security-adv

The `ibexa.site_access.config.default.io.file_storage.file_type_blacklist` setting defined in the config file `src/bundle/Core/Resources/config/default_settings.yml` in the Core bundle lists filename extensions for files that shouldn't be uploaded. Attempting to upload such files results in an error message. It exists to prevent uploading files that might be executed on the server, a Remote Code Execution (RCE) vulnerability. (There are also other prevention measures in place, like using the web server configuration to block execution of uploaded scripts, see the next point.)

You should adapt this list to your needs. Note that `svg` images are blocked because they may contain JavaScript code. If you opt to allow them, make sure you take steps to mitigate this risk.
You should adapt this list to your needs. Note that `svg` images are blocked because they may contain JavaScript code.
If you opt to allow them, make sure you take steps to mitigate the risk.

The default list of blocked file types contains: `hta htm html jar js jse pgif phar php php3 php4 php5 phps phpt pht phtml svg swf xhtm xhtml`

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