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Add base URL as default CSP restriction

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This follows an [HTTP Observatory recommendation](https://observatory.mozilla.org/analyze/privatebin.net):
> Restricts use of the <base> tag by using base-uri 'none', base-uri 'self', or specific origins.

Given we don't use that anywhere, this safe should be safe. (not tested practically though)
This commit is contained in:
rugk 2021-04-16 22:03:02 +02:00
parent 8232dce395
commit fd7d05e862
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GPG key ID: 05D40A636AFAB34D
2 changed files with 3 additions and 2 deletions
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2
cfg/conf.sample.php
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@ -87,7 +87,7 @@ languageselection = false
; async functions and display an error if not and for Chrome to enable
; webassembly support (used for zlib compression). You can remove it if Chrome
; doesn't need to be supported and old browsers don't need to be warned.
; cspheader = "default-src 'none'; manifest-src 'self'; connect-src * blob:; script-src 'self' 'unsafe-eval' resource:; style-src 'self'; font-src 'self'; img-src 'self' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads"
; cspheader = "default-src 'none'; base-uri 'self'; manifest-src 'self'; connect-src * blob:; script-src 'self' 'unsafe-eval' resource:; style-src 'self'; font-src 'self'; img-src 'self' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads"
; stay compatible with PrivateBin Alpha 0.19, less secure
; if enabled will use base64.js version 1.7 instead of 2.1.9 and sha1 instead of

3
lib/Configuration.php
View file

@ -55,7 +55,7 @@ class Configuration
'urlshortener' => '',
'qrcode' => true,
'icon' => 'identicon',
'cspheader' => 'default-src \'none\'; manifest-src \'self\'; connect-src * blob:; script-src \'self\' \'unsafe-eval\' resource:; style-src \'self\'; font-src \'self\'; img-src \'self\' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads',
'cspheader' => 'default-src \'none\'; base-uri \'self\'; manifest-src \'self\'; connect-src * blob:; script-src \'self\' \'unsafe-eval\' resource:; style-src \'self\'; font-src \'self\'; img-src \'self\' data: blob:; media-src blob:; object-src blob:; sandbox allow-same-origin allow-scripts allow-forms allow-popups allow-modals allow-downloads',
'zerobincompatibility' => false,
'httpwarning' => true,
'compression' => 'zlib',
@ -265,3 +265,4 @@ class Configuration
return $this->_configuration[$section];
}
}