Prior to this change schannel ignored --tls-max (CURL_SSLVERSION_MAX_
macros) when --tlsv1 (CURL_SSLVERSION_TLSv1) or default TLS
(CURL_SSLVERSION_DEFAULT), using a max of TLS 1.2 always.
Closes https://github.com/curl/curl/pull/4633
- Disable the extra sensitivity except in debug builds (--enable-debug).
- Improve SYSCALL error message logic in ossl_send and ossl_recv so that
"No error" / "Success" socket error text isn't shown on SYSCALL error.
Prior to this change 0ab38f5 (precedes 7.67.0) increased the sensitivity
of OpenSSL's SSL_ERROR_SYSCALL error so that abrupt server closures were
also considered errors. For example, a server that does not send a known
protocol termination point (eg HTTP content length or chunked encoding)
_and_ does not send a TLS termination point (close_notify alert) would
cause an error if it closed the connection.
To be clear that behavior made it into release build 7.67.0
unintentionally. Several users have reported it as an issue.
Ultimately the idea is a good one, since it can help prevent against a
truncation attack. Other SSL backends may already behave similarly (such
as Windows native OS SSL Schannel). However much more of our user base
is using OpenSSL and there is a mass of legacy users in that space, so I
think that behavior should be partially reverted and then rolled out
slowly.
This commit changes the behavior so that the increased sensitivity is
disabled in all curl builds except curl debug builds (DEBUGBUILD). If
after a period of time there are no major issues then it can be enabled
in dev and release builds with the newest OpenSSL (1.1.1+), since users
using the newest OpenSSL are the least likely to have legacy problems.
Bug: https://github.com/curl/curl/issues/4409#issuecomment-555955794
Reported-by: Bjoern Franke
Fixes https://github.com/curl/curl/issues/4624
Closes https://github.com/curl/curl/pull/4623
- Open the CA file using FILE_SHARE_READ mode so that others can read
from it as well.
Prior to this change our schannel code opened the CA file without
sharing which meant concurrent openings (eg an attempt from another
thread or process) would fail during the time it was open without
sharing, which in curl's case would cause error:
"schannel: failed to open CA file".
Bug: https://curl.haxx.se/mail/lib-2019-10/0104.html
Reported-by: Richard Alcock
... as it can make it wait there for a long time for no good purpose.
Patched-by: Jay Satiro
Reported-by: Bylon2 on github
Adviced-by: Nikos Mavrogiannopoulos
Fixes#4487Closes#4541
It was already fixed for BoringSSL in commit a0f8fccb1e.
LibreSSL has had the second argument to SSL_CTX_set_min_proto_version
as uint16_t ever since the function was added in [0].
[0] 56f107201b
Closes https://github.com/curl/curl/pull/4397
For FTPS transfers, curl gets close_notify on the data connection
without that being a signal to close the control connection!
Regression since 3f5da4e59a (7.65.0)
Reported-by: Zenju on github
Reviewed-by: Jay Satiro
Fixes#4329Closes#4340
OpenSSL 1.1.0 adds SSL_CTX_set_<min|max>_proto_version() that we now use
when available. Existing code is preserved for older versions of
OpenSSL.
Closes#4304
SSL_VersionRangeGetDefault returns (TLSv1.0, TLSv1.2) as supported
range in NSS 3.45. It looks like the intention is to raise the minimum
version rather than lowering the maximum, so adjust accordingly. Note
that the caller (nss_setup_connect) initializes the version range to
(TLSv1.0, TLSv1.3), so there is no need to check for >= TLSv1.0 again.
Closes#4187
Reviewed-by: Daniel Stenberg
Reviewed-by: Kamil Dudka
It was used (intended) to pass in the size of the 'socks' array that is
also passed to these functions, but was rarely actually checked/used and
the array is defined to a fixed size of MAX_SOCKSPEREASYHANDLE entries
that should be used instead.
Closes#4169
Several reasons:
- we can't add everyone who's helping out so its unfair to just a few
selected ones.
- we already list all helpers in THANKS and in RELEASE-NOTES for each
release
- we don't want to give the impression that some parts of the code is
"owned" or "controlled" by specific persons
Assisted-by: Daniel Gustafsson
Closes#4129
PK11_IsPresent() checks for the token for the given slot is available,
and sets needlogin flags for the PK11_Authenticate() call. Should it
return false, we should however treat it as an error and bail out.
Closes https://github.com/curl/curl/pull/4110
The file suffix for dynamically loadable objects on macOS is .dylib,
which need to be added for the module definitions in order to get the
NSS TLS backend to work properly on macOS.
Closes https://github.com/curl/curl/pull/4046
The value of the maxPTDs parameter to PR_Init() has since at least
NSPR 2.1, which was released sometime in 1998, been marked ignored
as is accordingly not used in the initialization code. Setting it
to a value when calling PR_Init() is thus benign, but indicates an
intent which may be misleading. Reset the value to zero to improve
clarity.
Closes https://github.com/curl/curl/pull/4054
Change the logic around such that we only keep CRLs that NSS actually
ended up caching around for later deletion. If CERT_CacheCRL() fails
then there is little point in delaying the freeing of the CRL as it
is not used.
Closes https://github.com/curl/curl/pull/4053
... since that needs UI_OpenSSL() which isn't provided when OpenSSL is
built with OPENSSL_NO_UI_CONSOLE which happens when OpenSSL is built for
UWP (with "VC-WIN32-UWP").
Reported-by: Vasily Lobaskin
Fixes#4073Closes#4077
Certinfo gives the same result for all OpenSSL versions.
Also made printing RSA pubkeys consistent with older versions.
Reported-by: Michael Wallner
Fixes#3706Closes#4030
OpenSSL used to call exit(1) on syntax errors in OPENSSL_config(),
which is why we switched to CONF_modules_load_file() and introduced
a comment stating why. This behavior was however changed in OpenSSL
commit abdd677125f3a9e3082f8c5692203590fdb9b860, so remove the now
outdated and incorrect comment. The mentioned commit also declares
OPENSSL_config() deprecated so keep the current coding.
Closes#4033
Reviewed-by: Daniel Stenberg <daniel@haxx.se>
Remove support for, references to and use of "cyaSSL" from the source
and docs. wolfSSL is the current name and there's no point in keeping
references to ancient history.
Assisted-by: Daniel Gustafsson
Closes#3903
They serve very little purpose and mostly just add noise. Most of them
have been around for a very long time. I read them all before removing
or rephrasing them.
Ref: #3876Closes#3883
In Curl_multissl_version() it was possible to overflow the passed in
buffer if the generated version string exceeded the size of the buffer.
Fix by inverting the logic, and also make sure to not exceed the local
buffer during the string generation.
Closes#3863
Reported-by: nevv on HackerOne/curl
Reviewed-by: Jay Satiro
Reviewed-by: Daniel Stenberg
Older versions of OpenSSL report FIPS availabilty via an OPENSSL_FIPS
define. It uses this define to determine whether to publish -fips at
the end of the version displayed. Applications that utilize the version
reported by OpenSSL will see a mismatch if they compare it to what curl
reports, as curl is not modifying the version in the same way. This
change simply adds a check to see if OPENSSL_FIPS is defined, and will
alter the reported version to match what OpenSSL itself provides. This
only appears to be applicable in versions of OpenSSL <1.1.1
Closes#3771
Currently you can do things like --cert <(cat ./cert.crt) with (at least) the
openssl backend, but that doesn't work for nss because is_file rejects fifos.
I don't actually know if this is sufficient, nss might do things internally
(like seeking back) that make this not work, so actual testing is needed.
Closes#3807
As soon as a TLS backend gets ALPN conformation about the specific HTTP
version it can now set the multiplex situation for the "bundle" and
trigger moving potentially queued up transfers to the CONNECT state.
