In 1.1.0 changing the ciphersuite during a renegotiation can result in
a crash leading to a DoS attack. In master this does not occur with TLS
(instead you get an internal error, which is still wrong but not a security
issue) - but the problem still exists in the DTLS code.
The problem is caused by changing the flag indicating whether to use ETM
or not immediately on negotiation of ETM, rather than at CCS. Therefore,
during a renegotiation, if the ETM state is changing (usually due to a
change of ciphersuite), then an error/crash will occur.
Due to the fact that there are separate CCS messages for read and write
we actually now need two flags to determine whether to use ETM or not.
CVE-2017-3733
Reviewed-by: Richard Levitte <levitte@openssl.org>
In 1.1.0 changing the ciphersuite during a renegotiation can result in
a crash leading to a DoS attack. In master this does not occur with TLS
(instead you get an internal error, which is still wrong but not a security
issue) - but the problem still exists in the DTLS code.
This commit provides a test for the issue.
CVE-2017-3733
Reviewed-by: Richard Levitte <levitte@openssl.org>
Make sure we get an HRR in the right circumstances based on kex mode.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2341)
Previously counting the number of tests in checkhandshake.pm took an
initial guess and then modified it based on various known special
cases. That is becoming increasingly untenable, so this changes it to
properly calculate the number of tests we expect to run.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2341)
This happens when a fd is added and then immediately removed from the
ASYNC_WAIT_CTX before pausing the job.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2581)
test/recipes/40-test_rehash.t uses test files from certs/demo, which
doesn't exist any longer. Have it use PEM files from test/ instead.
Because rehash wants only one certificate or CRL per file, we must
also filter those PEM files to produce test files with a single object
each.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2594)
If s->s3->tmp.new_cipher is NULL then a crash can occur. This can happen
if an alert gets sent after version negotiation (i.e. we have selected
TLSv1.3 and ended up in tls13_enc), but before a ciphersuite has been
selected.
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2575)
Idea is to keep it last for all eternity, so that if you find yourself
in time-pressed situation and deem that fuzz test can be temporarily
skipped, you can terminate the test suite with less hesitation about
following tests that you would have originally missed.
Reviewed-by: Rich Salz <rsalz@openssl.org>
For TLS 1.3 we select certificates with signature algorithms extension
only. For ECDSA+SHA384 there is the additional restriction that the
curve must be P-384: since the test uses P-256 this should fail.
Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2339)
The core SipHash supports either 8 or 16-byte output and a configurable
number of rounds.
The default behavior, as added to EVP, is to use 16-byte output and
2,4 rounds, which matches the behavior of most implementations.
There is an EVP_PKEY_CTRL that can control the output size.
Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2216)
Now that we support internal tests properly, we can test wpacket even in
shared builds.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2259)
In TLSv1.3 the connection will be created before the session is
established. In OpenSSL we send the NewSessionTicket message immediately
after the client finished has been received. Therefore we change
create_ssl_connection() to attempt a read of application data after the
handshake has completed. We expect this to fail but it will force the
reading of the NewSessionTicket and the session to be set up.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2259)
Add a client authentication signature algorithm to simple
ssl test and a server signature algorithm. Since we don't
do client auth this should have no effect. However if we
use client auth signature algorithms by mistake this will
abort the handshake with a no shared signature algorithms
error.
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2290)
In test/ssl_test, parsing ExpectedClientSignHash ended up in the
expected_server_sign_hash field.
Reviewed-by: Stephen Henson <steve@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/2289)
