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Bug 1452496: Discard same-site cookie in cross site context. r=dveditz

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This commit is contained in:
Christoph Kerschbaumer 2018-04-10 17:17:49 +02:00
parent 98e4210df4
commit aaaf3a0193
2 changed files with 45 additions and 6 deletions
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11
netwerk/cookie/nsCookieService.cpp
View File

@ -3469,6 +3469,17 @@ nsCookieService::CanSetCookie(nsIURI* aHostURI,
return newCookie;
}
// If the new cookie is same-site but in a cross site context,
// browser must ignore the cookie.
if (aCookieAttributes.sameSite != nsICookie2::SAMESITE_UNSET &&
aThirdPartyUtil) {
bool isThirdParty = true;
aThirdPartyUtil->IsThirdPartyChannel(aChannel, aHostURI, &isThirdParty);
if (isThirdParty) {
return newCookie;
}
}
aSetCookie = true;
return newCookie;
}

40
netwerk/test/TestCookie.cpp
View File

@ -19,6 +19,7 @@
#include "nsIPrefService.h"
#include "mozilla/Unused.h"
#include "nsIURI.h"
#include "nsContentUtils.h"
using mozilla::Unused;
@ -75,6 +76,33 @@ SetACookie(nsICookieService *aCookieService, const char *aSpec1, const char *aSp
EXPECT_TRUE(NS_SUCCEEDED(rv));
}
// Custom Cookie Generator specifically for the needs of same-site cookies!
// Hands off unless you know exactly what you are doing!
void
SetASameSiteCookie(nsICookieService *aCookieService, const char *aSpec1, const char *aSpec2, const char* aCookieString, const char *aServerTime)
{
nsCOMPtr<nsIURI> uri1, uri2;
NS_NewURI(getter_AddRefs(uri1), aSpec1);
if (aSpec2)
NS_NewURI(getter_AddRefs(uri2), aSpec2);
// We create a dummy channel using the aSpec1 to simulate same-siteness
nsCOMPtr<nsIScriptSecurityManager> ssm = nsContentUtils::GetSecurityManager();
nsCOMPtr<nsIPrincipal> spec1Principal;
nsCString tmpString(aSpec1);
ssm->CreateCodebasePrincipalFromOrigin(tmpString, getter_AddRefs(spec1Principal));
nsCOMPtr<nsIChannel> dummyChannel;
NS_NewChannel(getter_AddRefs(dummyChannel),
uri1,
spec1Principal,
nsILoadInfo::SEC_ONLY_FOR_EXPLICIT_CONTENTSEC_CHECK,
nsIContentPolicy::TYPE_OTHER);
nsresult rv = aCookieService->SetCookieStringFromHttp(uri1, uri2, nullptr, (char *)aCookieString, aServerTime, dummyChannel);
EXPECT_TRUE(NS_SUCCEEDED(rv));
}
void
SetACookieNoHttp(nsICookieService *aCookieService, const char *aSpec, const char* aCookieString)
{
@ -773,17 +801,17 @@ TEST(TestCookie,TestCookieMain)
// Set cookies with various incantations of the samesite attribute:
// No same site attribute present
SetACookie(cookieService, "http://samesite.test", nullptr, "unset=yes", nullptr);
SetASameSiteCookie(cookieService, "http://samesite.test", nullptr, "unset=yes", nullptr);
// samesite attribute present but with no value
SetACookie(cookieService, "http://samesite.test", nullptr, "unspecified=yes; samesite", nullptr);
SetASameSiteCookie(cookieService, "http://samesite.test", nullptr, "unspecified=yes; samesite", nullptr);
// samesite attribute present but with an empty value
SetACookie(cookieService, "http://samesite.test", nullptr, "empty=yes; samesite=", nullptr);
SetASameSiteCookie(cookieService, "http://samesite.test", nullptr, "empty=yes; samesite=", nullptr);
// samesite attribute present but with an invalid value
SetACookie(cookieService, "http://samesite.test", nullptr, "bogus=yes; samesite=bogus", nullptr);
SetASameSiteCookie(cookieService, "http://samesite.test", nullptr, "bogus=yes; samesite=bogus", nullptr);
// samesite=strict
SetACookie(cookieService, "http://samesite.test", nullptr, "strict=yes; samesite=strict", nullptr);
SetASameSiteCookie(cookieService, "http://samesite.test", nullptr, "strict=yes; samesite=strict", nullptr);
// samesite=lax
SetACookie(cookieService, "http://samesite.test", nullptr, "lax=yes; samesite=lax", nullptr);
SetASameSiteCookie(cookieService, "http://samesite.test", nullptr, "lax=yes; samesite=lax", nullptr);
EXPECT_TRUE(NS_SUCCEEDED(cookieMgr->GetEnumerator(getter_AddRefs(enumerator))));
i = 0;