Bug 1475448 - Add ContentSecurityPolicyParser fuzzing target. r=ckerschb, sr=decoder

dom/security/fuzztest/csp_fuzzer.cpp

@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+#include "FuzzingInterface.h"
+#include "nsCSPContext.h"
+#include "nsNetUtil.h"
+#include "nsStringFwd.h"
+
+static int
+LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+  nsresult ret;
+  nsCOMPtr<nsIURI> selfURI;
+  ret = NS_NewURI(getter_AddRefs(selfURI), "http://selfuri.com");
+  if (ret != NS_OK)
+    return 0;
+
+  mozilla::OriginAttributes attrs;
+  nsCOMPtr<nsIPrincipal> selfURIPrincipal =
+    mozilla::BasePrincipal::CreateCodebasePrincipal(selfURI, attrs);
+  if (!selfURIPrincipal)
+    return 0;
+
+  nsCOMPtr<nsIContentSecurityPolicy> csp =
+    do_CreateInstance(NS_CSPCONTEXT_CONTRACTID, &ret);
+  if (ret != NS_OK)
+    return 0;
+
+  ret = csp->SetRequestContext(nullptr, selfURIPrincipal);
+  if (ret != NS_OK)
+    return 0;
+
+  NS_ConvertASCIItoUTF16 policy(reinterpret_cast<const char*>(data), size);
+  if (!policy.get())
+    return 0;
+  csp->AppendPolicy(policy, false, false);
+
+  return 0;
+}
+
+MOZ_FUZZING_INTERFACE_RAW(nullptr, LLVMFuzzerTestOneInput, ContentSecurityPolicyParser);
+

dom/security/fuzztest/csp_fuzzer.dict

@@ -0,0 +1,95 @@
+### dom/security/nsCSPParser.cpp
+# tokens
+":"
+";"
+"/"
+"+"
+"-"
+"."
+"_"
+"~"
+"*"
+"'"
+"#"
+"?"
+"%"
+"!"
+"$"
+"&"
+"("
+")"
+"="
+"@"
+
+### https://www.w3.org/TR/{CSP,CSP2,CSP3}/
+# directive names
+"default-src"
+"script-src"
+"object-src"
+"style-src"
+"img-src"
+"media-src"
+"frame-src"
+"font-src"
+"connect-src"
+"report-uri"
+"frame-ancestors"
+"reflected-xss"
+"base-uri"
+"form-action"
+"manifest-src"
+"upgrade-insecure-requests"
+"child-src"
+"block-all-mixed-content"
+"require-sri-for"
+"sandbox"
+"worker-src"
+"plugin-types"
+"disown-opener"
+"report-to"
+
+# directive values
+"'self'"
+"'unsafe-inline'"
+"'unsafe-eval'"
+"'none'"
+"'strict-dynamic'"
+"'unsafe-hashed-attributes'"
+"'nonce-AA=='"
+"'sha256-fw=='"
+"'sha384-/w=='"
+"'sha512-//8='"
+
+# subresources
+"a"
+"audio"
+"embed"
+"iframe"
+"img"
+"link"
+"object"
+"script"
+"source"
+"style"
+"track"
+"video"
+
+# sandboxing flags
+"allow-forms"
+"allow-pointer-lock"
+"allow-popups"
+"allow-same-origin"
+"allow-scripts"
+"allow-top-navigation"
+
+# URI components
+"https:"
+"ws:"
+"blob:"
+"data:"
+"filesystem:"
+"javascript:"
+"http://"
+"selfuri.com"
+"127.0.0.1"
+"::1"

dom/security/fuzztest/moz.build

@@ -0,0 +1,21 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+Library('FuzzingDOMSecurity')
+
+LOCAL_INCLUDES += [
+    '/dom/security',
+    '/netwerk/base',
+]
+
+include('/tools/fuzzing/libfuzzer-config.mozbuild')
+
+SOURCES += [
+    'csp_fuzzer.cpp'
+]
+
+FINAL_LIBRARY = 'xul-gtest'
+

dom/security/moz.build

@@ -51,3 +51,11 @@ LOCAL_INCLUDES += [
     '/netwerk/base',
     '/netwerk/protocol/data', # for nsDataHandler.h
 ]
+
+include('/tools/fuzzing/libfuzzer-config.mozbuild')
+
+if CONFIG['FUZZING_INTERFACES']:
+    TEST_DIRS += [
+        'fuzztest'
+    ]
+