From 16fe2fd15a7383043c97baebbe9f3a8047c88f04 Mon Sep 17 00:00:00 2001 From: Hanno Becker Date: Tue, 21 Aug 2018 13:55:22 +0100 Subject: [PATCH 1/3] ssl-opt.sh: Add DTLS session resumption tests Fixes #1969. --- tests/ssl-opt.sh | 160 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 160 insertions(+) diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh index 9a432fb0b643..49543e072a8d 100755 --- a/tests/ssl-opt.sh +++ b/tests/ssl-opt.sh @@ -1219,6 +1219,71 @@ run_test "Session resume using tickets: openssl client" \ -s "session successfully restored from ticket" \ -s "a session has been resumed" +# Tests for Session Tickets with DTLS + +run_test "Session resume using tickets, DTLS: basic" \ + "$P_SRV debug_level=3 dtls=1 tickets=1" \ + "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1" \ + 0 \ + -c "client hello, adding session ticket extension" \ + -s "found session ticket extension" \ + -s "server hello, adding session ticket extension" \ + -c "found session_ticket extension" \ + -c "parse new session ticket" \ + -S "session successfully restored from cache" \ + -s "session successfully restored from ticket" \ + -s "a session has been resumed" \ + -c "a session has been resumed" + +run_test "Session resume using tickets, DTLS: cache disabled" \ + "$P_SRV debug_level=3 dtls=1 tickets=1 cache_max=0" \ + "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1" \ + 0 \ + -c "client hello, adding session ticket extension" \ + -s "found session ticket extension" \ + -s "server hello, adding session ticket extension" \ + -c "found session_ticket extension" \ + -c "parse new session ticket" \ + -S "session successfully restored from cache" \ + -s "session successfully restored from ticket" \ + -s "a session has been resumed" \ + -c "a session has been resumed" + +run_test "Session resume using tickets, DTLS: timeout" \ + "$P_SRV debug_level=3 dtls=1 tickets=1 cache_max=0 ticket_timeout=1" \ + "$P_CLI debug_level=3 dtls=1 tickets=1 reconnect=1 reco_delay=2" \ + 0 \ + -c "client hello, adding session ticket extension" \ + -s "found session ticket extension" \ + -s "server hello, adding session ticket extension" \ + -c "found session_ticket extension" \ + -c "parse new session ticket" \ + -S "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -S "a session has been resumed" \ + -C "a session has been resumed" + +run_test "Session resume using tickets, DTLS: openssl server" \ + "$O_SRV -dtls1" \ + "$P_CLI dtls=1 debug_level=3 tickets=1 reconnect=1" \ + 0 \ + -c "client hello, adding session ticket extension" \ + -c "found session_ticket extension" \ + -c "parse new session ticket" \ + -c "a session has been resumed" + +run_test "Session resume using tickets, DTLS: openssl client" \ + "$P_SRV dtls=1 debug_level=3 tickets=1" \ + "( $O_CLI -dtls1 -sess_out $SESSION; \ + $O_CLI -dtls1 -sess_in $SESSION; \ + rm -f $SESSION )" \ + 0 \ + -s "found session ticket extension" \ + -s "server hello, adding session ticket extension" \ + -S "session successfully restored from cache" \ + -s "session successfully restored from ticket" \ + -s "a session has been resumed" + # Tests for Session Resume based on session-ID and cache run_test "Session resume using cache: tickets enabled on client" \ @@ -1314,6 +1379,101 @@ run_test "Session resume using cache: openssl server" \ -C "parse new session ticket" \ -c "a session has been resumed" +# Tests for Session Resume based on session-ID and cache, DTLS + +run_test "Session resume using cache, DTLS: tickets enabled on client" \ + "$P_SRV dtls=1 debug_level=3 tickets=0" \ + "$P_CLI dtls=1 debug_level=3 tickets=1 reconnect=1" \ + 0 \ + -c "client hello, adding session ticket extension" \ + -s "found session ticket extension" \ + -S "server hello, adding session ticket extension" \ + -C "found session_ticket extension" \ + -C "parse new session ticket" \ + -s "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -s "a session has been resumed" \ + -c "a session has been resumed" + +run_test "Session resume using cache, DTLS: tickets enabled on server" \ + "$P_SRV dtls=1 debug_level=3 tickets=1" \ + "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1" \ + 0 \ + -C "client hello, adding session ticket extension" \ + -S "found session ticket extension" \ + -S "server hello, adding session ticket extension" \ + -C "found session_ticket extension" \ + -C "parse new session ticket" \ + -s "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -s "a session has been resumed" \ + -c "a session has been resumed" + +run_test "Session resume using cache, DTLS: cache_max=0" \ + "$P_SRV dtls=1 debug_level=3 tickets=0 cache_max=0" \ + "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1" \ + 0 \ + -S "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -S "a session has been resumed" \ + -C "a session has been resumed" + +run_test "Session resume using cache, DTLS: cache_max=1" \ + "$P_SRV dtls=1 debug_level=3 tickets=0 cache_max=1" \ + "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1" \ + 0 \ + -s "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -s "a session has been resumed" \ + -c "a session has been resumed" + +run_test "Session resume using cache, DTLS: timeout > delay" \ + "$P_SRV dtls=1 debug_level=3 tickets=0" \ + "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 reco_delay=0" \ + 0 \ + -s "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -s "a session has been resumed" \ + -c "a session has been resumed" + +run_test "Session resume using cache, DTLS: timeout < delay" \ + "$P_SRV dtls=1 debug_level=3 tickets=0 cache_timeout=1" \ + "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 reco_delay=2" \ + 0 \ + -S "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -S "a session has been resumed" \ + -C "a session has been resumed" + +run_test "Session resume using cache, DTLS: no timeout" \ + "$P_SRV dtls=1 debug_level=3 tickets=0 cache_timeout=0" \ + "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1 reco_delay=2" \ + 0 \ + -s "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -s "a session has been resumed" \ + -c "a session has been resumed" + +run_test "Session resume using cache, DTLS: openssl client" \ + "$P_SRV dtls=1 debug_level=3 tickets=0" \ + "( $O_CLI -dtls1 -sess_out $SESSION; \ + $O_CLI -dtls1 -sess_in $SESSION; \ + rm -f $SESSION )" \ + 0 \ + -s "found session ticket extension" \ + -S "server hello, adding session ticket extension" \ + -s "session successfully restored from cache" \ + -S "session successfully restored from ticket" \ + -s "a session has been resumed" + +run_test "Session resume using cache, DTLS: openssl server" \ + "$O_SRV -dtls1" \ + "$P_CLI dtls=1 debug_level=3 tickets=0 reconnect=1" \ + 0 \ + -C "found session_ticket extension" \ + -C "parse new session ticket" \ + -c "a session has been resumed" + # Tests for Max Fragment Length extension MAX_CONTENT_LEN_EXPECT='16384' From d636dd0cbbb638bee889cad47b88fbbb9e9bf653 Mon Sep 17 00:00:00 2001 From: Hanno Becker Date: Tue, 21 Aug 2018 13:55:31 +0100 Subject: [PATCH 2/3] Fix bug in SSL ticket implementation removing keys of age < 1s Fixes #1968. --- library/ssl_ticket.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/library/ssl_ticket.c b/library/ssl_ticket.c index 0e27900b55c9..a27d2ec892d0 100644 --- a/library/ssl_ticket.c +++ b/library/ssl_ticket.c @@ -101,7 +101,7 @@ static int ssl_ticket_update_keys( mbedtls_ssl_ticket_context *ctx ) uint32_t current_time = (uint32_t) time( NULL ); uint32_t key_time = ctx->keys[ctx->active].generation_time; - if( current_time > key_time && + if( current_time >= key_time && current_time - key_time < ctx->ticket_lifetime ) { return( 0 ); From 1a60330e08b335284ec29cd44ebc5ce1e234b1e2 Mon Sep 17 00:00:00 2001 From: Hanno Becker Date: Wed, 22 Aug 2018 15:05:36 +0100 Subject: [PATCH 3/3] Adapt ChangeLog --- ChangeLog | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/ChangeLog b/ChangeLog index 8db46ee156f9..cb6d6f9d01c8 100644 --- a/ChangeLog +++ b/ChangeLog @@ -12,6 +12,11 @@ Bugfix interoperability issues with BouncyCastle. Raised by milenamil in #1157. * Fix potential use-after-free in mbedtls_ssl_get_max_frag_len() and mbedtls_ssl_get_record_expansion() after a session reset. Fixes #1941. + * Fix a bug in the update function for SSL ticket keys which previously + invalidated keys of a lifetime of less than a 1s. Fixes #1968. + +Changes + * Add tests for session resumption in DTLS. = mbed TLS 2.1.14 branch released 2018-07-25