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Add config option to disallow framing via CSP

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Signed-off-by: David Mehren <git@herrmehren.de>
This commit is contained in:
David Mehren 2021-07-18 09:59:14 +02:00
parent 9499add64c
commit bd44cbc16c
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GPG key ID: 185982BA4C42B7C3
4 changed files with 12 additions and 6 deletions
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11
lib/csp.js
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@ -21,9 +21,7 @@ const defaultDirectives = {
],
styleSrc: [config.serverURL + '/build/', '\'unsafe-inline\'', 'https://github.githubassets.com'], // unsafe-inline is required for some libs, plus used in views
objectSrc: ['*'], // Chrome PDF viewer treats PDFs as objects :/
mediaSrc: ['*'],
childSrc: ['*'],
connectSrc: ['*']
formAction: ['\'self\'']
}
const cdnDirectives = {
@ -46,6 +44,10 @@ const dropboxDirectives = {
scriptSrc: ['https://www.dropbox.com', '\'unsafe-inline\'']
}
const disallowFramingDirectives = {
frameAncestors: ['\'self\'']
}
CspStrategy.computeDirectives = function () {
const directives = {}
mergeDirectives(directives, config.csp.directives)
@ -54,6 +56,7 @@ CspStrategy.computeDirectives = function () {
mergeDirectivesIf(config.csp.addDisqus, directives, disqusDirectives)
mergeDirectivesIf(config.csp.addGoogleAnalytics, directives, googleAnalyticsDirectives)
mergeDirectivesIf(config.dropbox.appKey, directives, dropboxDirectives)
mergeDirectivesIf(!config.csp.allowFraming, directives, disallowFramingDirectives)
addInlineScriptExceptions(directives)
addUpgradeUnsafeRequestsOptionTo(directives)
addReportURI(directives)
@ -92,7 +95,7 @@ function getCspNonce (req, res) {
}
function addUpgradeUnsafeRequestsOptionTo (directives) {
if (config.csp.upgradeInsecureRequests === 'auto' && config.useSSL) {
if (config.csp.upgradeInsecureRequests === 'auto' && (config.useSSL || config.protocolUseSSL)) {
directives.upgradeInsecureRequests = []
} else if (config.csp.upgradeInsecureRequests === true) {
directives.upgradeInsecureRequests = []