From 4780e12a7f9c7f9546410adb5ab6acd2efe953b7 Mon Sep 17 00:00:00 2001 From: janekptacijarabaci Date: Mon, 30 Apr 2018 22:09:55 +0200 Subject: Bug 1182569 - Skip security check for plugins using newstream attribute --- docshell/base/nsDocShell.cpp | 28 ++++++++++++++++++++-------- docshell/base/nsDocShell.h | 6 ++++-- docshell/base/nsILinkHandler.h | 10 ++++++++-- dom/base/nsContentUtils.cpp | 2 +- dom/plugins/base/nsPluginInstanceOwner.cpp | 25 ++++++++++++++----------- 5 files changed, 47 insertions(+), 24 deletions(-) diff --git a/docshell/base/nsDocShell.cpp b/docshell/base/nsDocShell.cpp index de8f79f0a..d67941620 100644 --- a/docshell/base/nsDocShell.cpp +++ b/docshell/base/nsDocShell.cpp @@ -13918,7 +13918,8 @@ public: const nsAString& aFileName, nsIInputStream* aPostDataStream, nsIInputStream* aHeadersDataStream, - bool aIsTrusted); + bool aIsTrusted, + nsIPrincipal* aTriggeringPrincipal); NS_IMETHOD Run() override { @@ -13934,7 +13935,7 @@ public: mHandler->OnLinkClickSync(mContent, mURI, mTargetSpec.get(), mFileName, mPostDataStream, mHeadersDataStream, - nullptr, nullptr); + nullptr, nullptr, mTriggeringPrincipal); } return NS_OK; } @@ -13949,6 +13950,7 @@ private: nsCOMPtr mContent; PopupControlState mPopupState; bool mIsTrusted; + nsCOMPtr mTriggeringPrincipal; }; OnLinkClickEvent::OnLinkClickEvent(nsDocShell* aHandler, @@ -13958,7 +13960,8 @@ OnLinkClickEvent::OnLinkClickEvent(nsDocShell* aHandler, const nsAString& aFileName, nsIInputStream* aPostDataStream, nsIInputStream* aHeadersDataStream, - bool aIsTrusted) + bool aIsTrusted, + nsIPrincipal* aTriggeringPrincipal) : mHandler(aHandler) , mURI(aURI) , mTargetSpec(aTargetSpec) @@ -13968,6 +13971,7 @@ OnLinkClickEvent::OnLinkClickEvent(nsDocShell* aHandler, , mContent(aContent) , mPopupState(mHandler->mScriptGlobal->GetPopupControlState()) , mIsTrusted(aIsTrusted) + , mTriggeringPrincipal(aTriggeringPrincipal) { } @@ -13978,7 +13982,8 @@ nsDocShell::OnLinkClick(nsIContent* aContent, const nsAString& aFileName, nsIInputStream* aPostDataStream, nsIInputStream* aHeadersDataStream, - bool aIsTrusted) + bool aIsTrusted, + nsIPrincipal* aTriggeringPrincipal) { NS_ASSERTION(NS_IsMainThread(), "wrong thread"); @@ -14017,7 +14022,8 @@ nsDocShell::OnLinkClick(nsIContent* aContent, nsCOMPtr ev = new OnLinkClickEvent(this, aContent, aURI, target.get(), aFileName, - aPostDataStream, aHeadersDataStream, aIsTrusted); + aPostDataStream, aHeadersDataStream, + aIsTrusted, aTriggeringPrincipal); return NS_DispatchToCurrentThread(ev); } @@ -14029,7 +14035,8 @@ nsDocShell::OnLinkClickSync(nsIContent* aContent, nsIInputStream* aPostDataStream, nsIInputStream* aHeadersDataStream, nsIDocShell** aDocShell, - nsIRequest** aRequest) + nsIRequest** aRequest, + nsIPrincipal* aTriggeringPrincipal) { // Initialize the DocShell / Request if (aDocShell) { @@ -14152,13 +14159,18 @@ nsDocShell::OnLinkClickSync(nsIContent* aContent, return NS_ERROR_OUT_OF_MEMORY; } + // if the triggeringPrincipal is not passed explicitly, then we + // fall back to using doc->NodePrincipal() as the triggeringPrincipal. + nsCOMPtr triggeringPrincipal = + aTriggeringPrincipal ? aTriggeringPrincipal + : aContent->NodePrincipal(); + nsresult rv = InternalLoad(clonedURI, // New URI nullptr, // Original URI false, // LoadReplace referer, // Referer URI refererPolicy, // Referer policy - aContent->NodePrincipal(), // Triggering is our node's - // principal + triggeringPrincipal, aContent->NodePrincipal(), flags, target, // Window target diff --git a/docshell/base/nsDocShell.h b/docshell/base/nsDocShell.h index 63a4e3358..f510a15b0 100644 --- a/docshell/base/nsDocShell.h +++ b/docshell/base/nsDocShell.h @@ -201,7 +201,8 @@ public: const nsAString& aFileName, nsIInputStream* aPostDataStream, nsIInputStream* aHeadersDataStream, - bool aIsTrusted) override; + bool aIsTrusted, + nsIPrincipal* aTriggeringPrincipal) override; NS_IMETHOD OnLinkClickSync(nsIContent* aContent, nsIURI* aURI, const char16_t* aTargetSpec, @@ -209,7 +210,8 @@ public: nsIInputStream* aPostDataStream = 0, nsIInputStream* aHeadersDataStream = 0, nsIDocShell** aDocShell = 0, - nsIRequest** aRequest = 0) override; + nsIRequest** aRequest = 0, + nsIPrincipal* aTriggeringPrincipal = nullptr) override; NS_IMETHOD OnOverLink(nsIContent* aContent, nsIURI* aURI, const char16_t* aTargetSpec) override; diff --git a/docshell/base/nsILinkHandler.h b/docshell/base/nsILinkHandler.h index 7cdcd566d..7069f1f1d 100644 --- a/docshell/base/nsILinkHandler.h +++ b/docshell/base/nsILinkHandler.h @@ -37,6 +37,8 @@ public: * @param aFileName non-null when the link should be downloaded as the given file * @param aHeadersDataStream ??? * @param aIsTrusted false if the triggerer is an untrusted DOM event. + * @param aTriggeringPrincipal, if not passed explicitly we fall back to + * the document's principal. */ NS_IMETHOD OnLinkClick(nsIContent* aContent, nsIURI* aURI, @@ -44,7 +46,8 @@ public: const nsAString& aFileName, nsIInputStream* aPostDataStream, nsIInputStream* aHeadersDataStream, - bool aIsTrusted) = 0; + bool aIsTrusted, + nsIPrincipal* aTriggeringPrincipal) = 0; /** * Process a click on a link. @@ -61,6 +64,8 @@ public: * @param aHeadersDataStream ??? * @param aDocShell (out-param) the DocShell that the request was opened on * @param aRequest the request that was opened + * @param aTriggeringPrincipal, if not passed explicitly we fall back to + * the document's principal. */ NS_IMETHOD OnLinkClickSync(nsIContent* aContent, nsIURI* aURI, @@ -69,7 +74,8 @@ public: nsIInputStream* aPostDataStream = 0, nsIInputStream* aHeadersDataStream = 0, nsIDocShell** aDocShell = 0, - nsIRequest** aRequest = 0) = 0; + nsIRequest** aRequest = 0, + nsIPrincipal* aTriggeringPrincipal = nullptr) = 0; /** * Process a mouse-over a link. diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp index bc8cea35a..76463df16 100644 --- a/dom/base/nsContentUtils.cpp +++ b/dom/base/nsContentUtils.cpp @@ -5104,7 +5104,7 @@ nsContentUtils::TriggerLink(nsIContent *aContent, nsPresContext *aPresContext, handler->OnLinkClick(aContent, aLinkURI, fileName.IsVoid() ? aTargetSpec.get() : EmptyString().get(), - fileName, nullptr, nullptr, aIsTrusted); + fileName, nullptr, nullptr, aIsTrusted, aContent->NodePrincipal()); } } diff --git a/dom/plugins/base/nsPluginInstanceOwner.cpp b/dom/plugins/base/nsPluginInstanceOwner.cpp index 291ae576d..d5b1eb9ea 100644 --- a/dom/plugins/base/nsPluginInstanceOwner.cpp +++ b/dom/plugins/base/nsPluginInstanceOwner.cpp @@ -535,16 +535,6 @@ NS_IMETHODIMP nsPluginInstanceOwner::GetURL(const char *aURL, nsresult rv = NS_NewURI(getter_AddRefs(uri), aURL, baseURI); NS_ENSURE_SUCCESS(rv, NS_ERROR_FAILURE); - if (aDoCheckLoadURIChecks) { - nsCOMPtr secMan( - do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv)); - NS_ENSURE_TRUE(secMan, NS_ERROR_FAILURE); - - rv = secMan->CheckLoadURIWithPrincipal(content->NodePrincipal(), uri, - nsIScriptSecurityManager::STANDARD); - NS_ENSURE_SUCCESS(rv, rv); - } - nsCOMPtr headersDataStream; if (aPostStream && aHeadersData) { if (!aHeadersDataLen) @@ -563,8 +553,21 @@ NS_IMETHODIMP nsPluginInstanceOwner::GetURL(const char *aURL, Preferences::GetInt("privacy.popups.disable_from_plugins"); nsAutoPopupStatePusher popupStatePusher((PopupControlState)blockPopups); + + // if security checks (in particular CheckLoadURIWithPrincipal) needs + // to be skipped we are creating a codebasePrincipal to make sure + // that security check succeeds. Please note that we do not want to + // fall back to using the systemPrincipal, because that would also + // bypass ContentPolicy checks which should still be enforced. + nsCOMPtr triggeringPrincipal; + if (!aDoCheckLoadURIChecks) { + mozilla::PrincipalOriginAttributes attrs = + BasePrincipal::Cast(content->NodePrincipal())->OriginAttributesRef(); + triggeringPrincipal = BasePrincipal::CreateCodebasePrincipal(uri, attrs); + } + rv = lh->OnLinkClick(content, uri, unitarget.get(), NullString(), - aPostStream, headersDataStream, true); + aPostStream, headersDataStream, true, triggeringPrincipal); return rv; } -- cgit v1.2.3