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core/nss to 3.59-1

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Kevin Mihelich 2020-11-15 23:07:29 +00:00
parent 10c54e171b
commit 4cec53e8fb
2 changed files with 3 additions and 167 deletions
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159
core/nss/0001-Bug-1672703-always-tolerate-the-first-CCS-in-TLS-1.3.patch
View file

@ -1,159 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Daiki Ueno <dueno@redhat.com>
Date: Mon, 26 Oct 2020 06:46:11 +0100
Subject: [PATCH] Bug 1672703, always tolerate the first CCS in TLS 1.3, r=mt
Summary:
This flips the meaning of the flag for checking excessive CCS
messages, so it only rejects multiple CCS messages while the first CCS
message is always accepted.
Reviewers: mt
Reviewed By: mt
Bug #: 1672703
Differential Revision: https://phabricator.services.mozilla.com/D94603
---
gtests/ssl_gtest/ssl_tls13compat_unittest.cc | 18 +++++++++---------
lib/ssl/ssl3con.c | 20 +++++++-------------
lib/ssl/sslimpl.h | 5 +----
3 files changed, 17 insertions(+), 26 deletions(-)
diff --git a/gtests/ssl_gtest/ssl_tls13compat_unittest.cc b/gtests/ssl_gtest/ssl_tls13compat_unittest.cc
index dcede798cc..645f84ff02 100644
--- a/gtests/ssl_gtest/ssl_tls13compat_unittest.cc
+++ b/gtests/ssl_gtest/ssl_tls13compat_unittest.cc
@@ -348,59 +348,59 @@ TEST_F(TlsConnectStreamTls13, ChangeCipherSpecBeforeClientHelloTwice) {
client_->CheckErrorCode(SSL_ERROR_HANDSHAKE_UNEXPECTED_ALERT);
}
-// The server rejects a ChangeCipherSpec if the client advertises an
-// empty session ID.
+// The server accepts a ChangeCipherSpec even if the client advertises
+// an empty session ID.
TEST_F(TlsConnectStreamTls13, ChangeCipherSpecAfterClientHelloEmptySid) {
EnsureTlsSetup();
ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3);
StartConnect();
client_->Handshake(); // Send ClientHello
client_->SendDirect(DataBuffer(kCannedCcs, sizeof(kCannedCcs))); // Send CCS
- server_->ExpectSendAlert(kTlsAlertUnexpectedMessage);
- server_->Handshake(); // Consume ClientHello and CCS
- server_->CheckErrorCode(SSL_ERROR_RX_MALFORMED_CHANGE_CIPHER);
+ Handshake();
+ CheckConnected();
}
// The server rejects multiple ChangeCipherSpec even if the client
// indicates compatibility mode with non-empty session ID.
TEST_F(Tls13CompatTest, ChangeCipherSpecAfterClientHelloTwice) {
EnsureTlsSetup();
ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3);
EnableCompatMode();
StartConnect();
client_->Handshake(); // Send ClientHello
// Send CCS twice in a row
client_->SendDirect(DataBuffer(kCannedCcs, sizeof(kCannedCcs)));
client_->SendDirect(DataBuffer(kCannedCcs, sizeof(kCannedCcs)));
server_->ExpectSendAlert(kTlsAlertUnexpectedMessage);
server_->Handshake(); // Consume ClientHello and CCS.
server_->CheckErrorCode(SSL_ERROR_RX_MALFORMED_CHANGE_CIPHER);
}
-// The client rejects a ChangeCipherSpec if it advertises an empty
+// The client accepts a ChangeCipherSpec even if it advertises an empty
// session ID.
TEST_F(TlsConnectStreamTls13, ChangeCipherSpecAfterServerHelloEmptySid) {
EnsureTlsSetup();
ConfigureVersion(SSL_LIBRARY_VERSION_TLS_1_3);
// To replace Finished with a CCS below
auto filter = MakeTlsFilter<TlsHandshakeDropper>(server_);
filter->SetHandshakeTypes({kTlsHandshakeFinished});
filter->EnableDecryption();
StartConnect();
client_->Handshake(); // Send ClientHello
server_->Handshake(); // Consume ClientHello, and
// send ServerHello..CertificateVerify
// Send CCS
server_->SendDirect(DataBuffer(kCannedCcs, sizeof(kCannedCcs)));
- client_->ExpectSendAlert(kTlsAlertUnexpectedMessage);
- client_->Handshake(); // Consume ClientHello and CCS
- client_->CheckErrorCode(SSL_ERROR_RX_MALFORMED_CHANGE_CIPHER);
+
+ // No alert is sent from the client. As Finished is dropped, we
+ // can't use Handshake() and CheckConnected().
+ client_->Handshake();
}
// The client rejects multiple ChangeCipherSpec in a row even if the
diff --git a/lib/ssl/ssl3con.c b/lib/ssl/ssl3con.c
index 767ffc30f1..b652dcea34 100644
--- a/lib/ssl/ssl3con.c
+++ b/lib/ssl/ssl3con.c
@@ -6645,11 +6645,7 @@ ssl_CheckServerSessionIdCorrectness(sslSocket *ss, SECItem *sidBytes)
/* TLS 1.3: We sent a session ID. The server's should match. */
if (!IS_DTLS(ss) && (sentRealSid || sentFakeSid)) {
- if (sidMatch) {
- ss->ssl3.hs.allowCcs = PR_TRUE;
- return PR_TRUE;
- }
- return PR_FALSE;
+ return sidMatch;
}
/* TLS 1.3 (no SID)/DTLS 1.3: The server shouldn't send a session ID. */
@@ -8696,7 +8692,6 @@ ssl3_HandleClientHello(sslSocket *ss, PRUint8 *b, PRUint32 length)
errCode = PORT_GetError();
goto alert_loser;
}
- ss->ssl3.hs.allowCcs = PR_TRUE;
}
/* TLS 1.3 requires that compression include only null. */
@@ -13066,15 +13061,14 @@ ssl3_HandleRecord(sslSocket *ss, SSL3Ciphertext *cText)
ss->ssl3.hs.ws != idle_handshake &&
cText->buf->len == 1 &&
cText->buf->buf[0] == change_cipher_spec_choice) {
- if (ss->ssl3.hs.allowCcs) {
- /* Ignore the first CCS. */
- ss->ssl3.hs.allowCcs = PR_FALSE;
+ if (!ss->ssl3.hs.rejectCcs) {
+ /* Allow only the first CCS. */
+ ss->ssl3.hs.rejectCcs = PR_TRUE;
return SECSuccess;
+ } else {
+ alert = unexpected_message;
+ PORT_SetError(SSL_ERROR_RX_MALFORMED_CHANGE_CIPHER);
}
-
- /* Compatibility mode is not negotiated. */
- alert = unexpected_message;
- PORT_SetError(SSL_ERROR_RX_MALFORMED_CHANGE_CIPHER);
}
if ((IS_DTLS(ss) && !dtls13_AeadLimitReached(spec)) ||
diff --git a/lib/ssl/sslimpl.h b/lib/ssl/sslimpl.h
index 44c43a0e6c..35d0c2d6bc 100644
--- a/lib/ssl/sslimpl.h
+++ b/lib/ssl/sslimpl.h
@@ -710,10 +710,7 @@ typedef struct SSL3HandshakeStateStr {
* or received. */
PRBool receivedCcs; /* A server received ChangeCipherSpec
* before the handshake started. */
- PRBool allowCcs; /* A server allows ChangeCipherSpec
- * as the middlebox compatibility mode
- * is explicitly indicarted by
- * legacy_session_id in TLS 1.3 ClientHello. */
+ PRBool rejectCcs; /* Excessive ChangeCipherSpecs are rejected. */
PRBool clientCertRequested; /* True if CertificateRequest received. */
PRBool endOfFlight; /* Processed a full flight (DTLS 1.3). */
ssl3KEADef kea_def_mutable; /* Used to hold the writable kea_def

11
core/nss/PKGBUILD
View file

@ -8,8 +8,8 @@
pkgbase=nss
pkgname=(nss ca-certificates-mozilla)
pkgver=3.58
pkgrel=2
pkgver=3.59
pkgrel=1
pkgdesc="Network Security Services"
url="https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS"
arch=(x86_64)
@ -17,12 +17,10 @@ license=(MPL GPL)
depends=(nspr sqlite zlib sh 'p11-kit>=0.23.19')
makedepends=(perl python gyp)
source=("https://ftp.mozilla.org/pub/security/nss/releases/NSS_${pkgver//./_}_RTM/src/nss-${pkgver}.tar.gz"
0001-Bug-1672703-always-tolerate-the-first-CCS-in-TLS-1.3.patch
certdata2pem.py bundle.sh
0001-Don-t-USE_ARM_GCM.patch
0002-fix-armv8_c_lib-dependency.patch)
sha256sums=('9f73cf789b5f109b978e5239551b609b0cafa88d18f0bc8ce3f976cb629353c0'
'62ec84bbd366f8431b70430082306f78a4f8510c301f14494391d1fd3a173f4a'
sha256sums=('e6298174caa8527beacdc2858f77ed098d7047c1792846040e27e420fed0ce24'
'd2a1579dae05fd16175fac27ef08b54731ecefdf414085c610179afcf62b096c'
'3bfadf722da6773bdabdd25bdf78158648043d1b7e57615574f189a88ca865dd'
'4587713da0a82ac2a994f71c08f6b73a8fbba95e4373f39402f22f813fc4259e'
@ -34,9 +32,6 @@ prepare() {
mkdir "$srcdir/certs"
ln -srt "$srcdir/certs" lib/ckfw/builtins/{certdata.txt,nssckbi.h}
# https://bugs.archlinux.org/task/68357
patch -Np1 -i "$srcdir/0001-Bug-1672703-always-tolerate-the-first-CCS-in-TLS-1.3.patch"
patch -p1 -i "${srcdir}"/0001-Don-t-USE_ARM_GCM.patch
patch -p1 -i "${srcdir}"/0002-fix-armv8_c_lib-dependency.patch
}