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Preferably customized cipher suites will be based on the default value.
But all may be used as base and hence it will be good to
handle anonymous suites separately as they are intended for testing purposes.
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Make sure tests are run with intended version settings.
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Otherwhise test can be wrongly initialized and will fail as they try to run
with a broken setup.
This is an addition to b3ca5727169deaa38917edca8288dcaff9a36800 that accidently
was the wrong version of that branch.
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Otherwhise test can be wrongly initialized and will fail as they try to run
with a broken setup.
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* ingela/ssl/dtls-alert-handling/OTP-14078:
dtls: Customize alert handling for DTLS over UDP
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Problems with failure of ssl_certificate_verify_SUITE when enabling DTLS-1
tests in ssl_basic_SUITE was a combination of the bug fixed by the
previous commit and missing clean up code for dtls_protocol_versions
application environment variable
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* ingela/ssl/timeout-cuddle:
ssl: Longer timeouts for test cases that do many handshakes
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From RFC 6347:
4.1.2.7. Handling Invalid Records
Unlike TLS, DTLS is resilient in the face of invalid records (e.g.,
invalid formatting, length, MAC, etc.). In general, invalid
records SHOULD be silently discarded, thus preserving the
association; however, an error MAY be logged for diagnostic
purposes. Implementations which choose to generate an alert
instead, MUST generate fatal level alerts to avoid attacks where
the attacker repeatedly probes the implementation to see how it
responds to various types of error. Note that if DTLS is run over
UDP, then any implementation which does this will be extremely
susceptible to denial-of-service (DoS) attacks because UDP forgery
is so easy. Thus, this practice is NOT RECOMMENDED for such
transports.
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This is mainly fixing the test suites so that they test the intended cipher
suites, issue reported in ERL-460.
Also ssl_cipher:anonymous_suites was corrected for DTLS.
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This code was not used and we already have mixed chains ECDH_RSA tests
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RSA signed certs
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The commit 8b10920 (OTP 19.3.1) fixed the non-delivery of final TLS
record in {active, once}, but this causes the ssl_closed message to be
lost when the TCP connection closes before ssl:close/1. The patch
restores the behavior of OTP 18.
This is the second part to fix https://bugs.erlang.org/browse/ERL-420
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When the server_name_indication is sent automatize the
clients check of that the hostname is present in the
servers certificate. Currently server_name_indication shall
be on the dns_id format. If server_name_indication is disabled
it is up to the user to do its own check in the verify_fun.
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Add session_id and remove undocumented ssl:session_info/1
Add client_random, server_random and master_secret, they will not be included
in ssl:connection_information/1 as they may affect the connections security if
used recklessly.
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We want to avoid failing test cases but still be able to merge
DTLS progress for 19.3
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The new_options_in_accept test is not working yet, however DTLS is still
work in progress and we want to make a progress merge to avoid merge conflicts
with other progress of the ssl application.
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Change retransmissions timers to use gen_statem state timeouts. We do
not need a retransmission timer in the state connection as data traffic in
DTLS over UDP is not retransmitted. If the last flight before
transitioning into connection is lost, it will be resent when the peer
resends its last flight. This will also make hibernation testing more
straight forward.
We need more adjustments later to handle a reliable DTLS transport
such as SCTP.
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DTLS does not support stream ciphers and needs diffrent
handling of the "#ssl_socket{}" handle .
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The PEM cache handling has proven to be too disruptive of the manager process.
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If a handshake message is really big it could happen that the ssl
process would hang due to failing of requesting more data from the
socket. This has been fixed.
Also added option to limit max handshake size. It has a default
value that should be big enough to handle normal usage and small
enough to mitigate DoS attacks.
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Beta DTLS, not production ready. Only very basically tested, and
not everything in the SPEC is implemented and some things
are hard coded that should not be, so this implementation can not be consider
secure.
Refactor "TLS connection state" and socket handling, to facilitate
DTLS implementation.
Create dtls "listner" (multiplexor) process that spawns
DTLS connection process handlers.
Handle DTLS fragmentation.
Framework for handling retransmissions.
Replay Detection is not implemented yet.
Alerts currently always handled as in TLS.
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ECC certs should preferably use SHA2, this is what we want to be
testing. Also assembling of all available test suites must consider TLS version.
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As per RFC 4492 Sec 5.1, the preferred order of selection of named
curves is based on client preferences.
Currently, the SSL application only picks entries according to the
absolute order of entries as tracked in a hardcoded list in code.
This patch changes things so that the client-specified order is
preferred. It also allows a mode where the server can be configured to
override the client's preferred order with its own, although the chosen
ECC must still be within both lists.
The configuration is done through the following options:
- `eccs`, shared by clients and servers alike, allows the specification
of the supported named curves, in their preferred order, and may
eventually support more values for explicit primes and so on.
- `honor_ecc_order`, a server-only option, is similar to
`honor_cipher_order` and will, by default let the server pick the
client-preferred ECC, and otherwise pick the server-preferred one.
The default value for `eccs` is the same as before, although the
server-chosen ECC now defaults to the client rather than previous
choice.
A function `ssl:eccs()` has been added that returns the highest
supported ECCs for the library.
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Test suite did not take TLS-version in to account. Also
some anonymous suites where included incorrectly in some TLS versions.
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init_per_testcase timeout for renegotiation tests would be overridden
by local timeout in test case help function.
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Skip some test on really slow solaris machines
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Tests in ECC_SUITE did not always use the certs implied by the
name. Variable naming also confused the intent.
ssl_certificate_verify_SUITE did not clean up properly and tests could
fail due to cache problems.
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* ingela/ssl/ssl_basic_SUITE-timeouts:
ssl: Tune timeouts
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These functions call getstat on the underlying TCP socket.
The only way to do this before now was to use a hack, either
by looking inside the #sslsocket{} record directly, or by
not using the SSL listen/accept functions and upgrading
from a TCP socket that is kept around for the purpose of
calling getstat later on.
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ssl servers can recognize sslv2 client hellos to interop with clients
that support higher version of SSL/TLS but also offers sslv2
Conflicts:
lib/ssl/src/tls_connection.erl
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gen_tcp:recv allows this, and if you're doing something like
Transport:recv(Socket, 0, 0), TCP will work and SSL will exit with
function_clause
There were other cases of this throughout the module. This PR cleans
them all up.
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There are a lot of cases where `ssl` application just returns unhelpful
`handshake failure` or `internal error`. This patch tries to provide
better diagnostics so operator can debug his SSL misconfiguration
without doing hardcore erlang debugging.
Here is an example escript that incorrectly uses server certificate as a
client one:
https://gist.github.com/binarin/35c34c2df7556bf04c8a878682ef3d67
With the patch it is properly reported as an error in "extended key
usage".
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Some legacy TLS 1.0 software does not tolerate the 1/n-1 content
split BEAST mitigation technique. This commit adds a beast_mitigation
SSL option (defaulting to one_n_minus_one) to select or disable the
BEAST mitigation technique.
Valid option values are (one_n_minus_one | zero_n | disabled).
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