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Add parsing for Record Size Limit extension in TLS 1.3

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Fixes #7007

Signed-off-by: Jan Bruckner <jan@janbruckner.de>
This commit is contained in:
Jan Bruckner 2023-02-10 12:45:19 +01:00
parent 5a3629b613
commit 151f64283f
11 changed files with 158 additions and 25 deletions
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15
tests/scripts/all.sh
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@ -3825,6 +3825,21 @@ component_test_tls13_no_compatibility_mode () {
tests/ssl-opt.sh
}
component_test_tls13_only_record_size_limit () {
msg "build: TLS 1.3 only from default, record size limit extension enabled"
scripts/config.py set MBEDTLS_SSL_RECORD_SIZE_LIMIT
make CFLAGS="'-DMBEDTLS_USER_CONFIG_FILE=\"../tests/configs/tls13-only.h\"'"
msg "test_suite_ssl: TLS 1.3 only, record size limit extension enabled"
cd tests; ./test_suite_ssl; cd ..
msg "ssl-opt.sh: (TLS 1.3 only, record size limit extension tests only)"
# Both the server and the client will currently abort the handshake when they encounter the
# record size limit extension. There is no way to prevent gnutls-cli from sending the extension
# which makes all G_NEXT_CLI + P_SRV tests fail. Thus, run only the tests for the this extension.
tests/ssl-opt.sh -f "Record Size Limit"
}
component_build_mingw () {
msg "build: Windows cross build - mingw64, make (Link Library)" # ~ 30s
make CC=i686-w64-mingw32-gcc AR=i686-w64-mingw32-ar LD=i686-w64-minggw32-ld CFLAGS='-Werror -Wall -Wextra' WINDOWS_BUILD=1 lib programs

49
tests/ssl-opt.sh
View file

@ -4727,32 +4727,37 @@ run_test "Max fragment length: DTLS client, larger message" \
# Tests for Record Size Limit extension
# gnutls feature tests: check if the record size limit extension is supported with TLS 1.2.
requires_gnutls_record_size_limit
run_test "Record Size Limit: Test gnutls record size limit feature" \
"$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2:+CIPHER-ALL --disable-client-cert -d 4" \
"$G_NEXT_CLI localhost --priority=NORMAL:-VERS-ALL:+VERS-TLS1.2 -V -d 4" \
0 \
-c "Preparing extension (Record Size Limit/28) for 'client hello'"\
-s "Parsing extension 'Record Size Limit/28' (2 bytes)" \
-s "Preparing extension (Record Size Limit/28) for 'TLS 1.2 server hello'" \
-c "Parsing extension 'Record Size Limit/28' (2 bytes)" \
-s "Version: TLS1.2" \
-c "Version: TLS1.2"
# gnutls feature tests: check if the record size limit extension is supported with TLS 1.3.
requires_gnutls_tls1_3
requires_gnutls_record_size_limit
run_test "Record Size Limit: TLS 1.3: Test gnutls record size limit feature" \
"$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL --disable-client-cert -d 4" \
requires_config_enabled MBEDTLS_SSL_RECORD_SIZE_LIMIT
run_test "Record Size Limit: TLS 1.3: Server-side parsing, debug output and fatal alert" \
"$P_SRV debug_level=3 force_version=tls13" \
"$G_NEXT_CLI localhost --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3 -V -d 4" \
1 \
-c "Preparing extension (Record Size Limit/28) for 'client hello'" \
-c "Sending extension Record Size Limit/28 (2 bytes)" \
-s "ClientHello: record_size_limit(28) extension received."\
-s "found record_size_limit extension" \
-s "RecordSizeLimit: 16385 Bytes" \
-c "Received alert \[110]: An unsupported extension was sent"
requires_gnutls_tls1_3
requires_gnutls_record_size_limit
requires_gnutls_next_disable_tls13_compat
requires_config_enabled MBEDTLS_SSL_RECORD_SIZE_LIMIT
run_test "Record Size Limit: TLS 1.3: Client-side parsing, debug output and fatal alert" \
"$G_NEXT_SRV --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+CIPHER-ALL:%DISABLE_TLS13_COMPAT_MODE --disable-client-cert -d 4" \
"$P_CLI debug_level=4 force_version=tls13" \
0 \
-c "Preparing extension (Record Size Limit/28) for 'client hello'"\
-s "Parsing extension 'Record Size Limit/28' (2 bytes)" \
-s "Preparing extension (Record Size Limit/28) for 'encrypted extensions'" \
-c "Parsing extension 'Record Size Limit/28' (2 bytes)" \
-s "Version: TLS1.3" \
-c "Version: TLS1.3"
-s "Preparing extension (Record Size Limit/28) for 'encrypted extensions'"
# The P_CLI can not yet send the Record Size Limit extension. Thus, the G_NEXT_SRV does not send
# a response in its EncryptedExtensions record.
# -s "Parsing extension 'Record Size Limit/28 (2 bytes)" \
# -s "Sending extension Record Size Limit/28 (2 bytes)" \
# -c "EncryptedExtensions: record_size_limit(28) extension received."\
# -c "found record_size_limit extension" \
# -c "RecordSizeLimit: 16385 Bytes" \
# -s "Received alert \[110]: An unsupported extension was sent"
# Tests for renegotiation