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2017-06-13upstream commitdjm@openbsd.org
Do not require that unknown EXT_INFO extension values not contain \0 characters. This would cause fatal connection errors if an implementation sent e.g. string-encoded sub-values inside a value. Reported by Denis Bider; ok markus@ Upstream-ID: 030e10fdc605563c040244c4b4f1d8ae75811a5c
2017-05-31upstream commitmarkus@openbsd.org
protocol handlers all get struct ssh passed; ok djm@ Upstream-ID: 0ca9ea2a5d01a6d2ded94c5024456a930c5bfb5d
2017-05-01upstream commitdjm@openbsd.org
unifdef WITH_SSH1 ok markus@ Upstream-ID: 9716e62a883ef8826c57f4d33b4a81a9cc7755c7
2017-03-29Remove SHA256 EVP wrapper implementation.Darren Tucker
All supported versions of OpenSSL should now have SHA256 so remove our EVP wrapper implementaion. ok djm@
2017-03-17upstream commitmarkus@openbsd.org
disallow KEXINIT before NEWKEYS; ok djm; report by vegard.nossum at oracle.com Upstream-ID: 3668852d1f145050e62f1da08917de34cb0c5234
2017-03-10upstream commitdjm@openbsd.org
fix regression in 7.4 server-sig-algs, where we were accidentally excluding SHA2 RSA signature methods. bz#2680, patch from Nuno Goncalves; ok dtucker@ Upstream-ID: 81ac8bfb30960447740b9b8f6a214dcf322f12e8
2017-03-10upstream commitdtucker@openbsd.org
Plug some mem leaks mostly on error paths. From jjelen at redhat.com via bz#2687, ok djm@ Upstream-ID: 3fb030149598957a51b7c8beb32bf92cf30c96f2
2017-02-04upstream commitdjm@openbsd.org
support =- for removing methods from algorithms lists, e.g. Ciphers=-*cbc; suggested by Cristian Ionescu-Idbohrn in bz#2671 "I like it" markus@ Upstream-ID: c78c38f9f81a963b33d0eade559f6048add24a6d
2016-10-13upstream commitmarkus@openbsd.org
Unregister the KEXINIT handler after message has been received. Otherwise an unauthenticated peer can repeat the KEXINIT and cause allocation of up to 128MB -- until the connection is closed. Reported by shilei-c at 360.cn Upstream-ID: 43649ae12a27ef94290db16d1a98294588b75c05
2016-09-29upstream commitdjm@openbsd.org
put back some pre-auth zlib bits that I shouldn't have removed - they are still used by the client. Spotted by naddy@ Upstream-ID: 80919468056031037d56a1f5b261c164a6f90dc2
2016-09-29upstream commitdjm@openbsd.org
restore pre-auth compression support in the client -- the previous commit was intended to remove it from the server only. remove a few server-side pre-auth compression bits that escaped adjust wording of Compression directive in sshd_config(5) pointed out by naddy@ ok markus@ Upstream-ID: d23696ed72a228dacd4839dd9f2dec424ba2016b
2016-09-24upstream commitdjm@openbsd.org
support plain curve25519-sha256 KEX algorithm now that it is approaching standardisation (same algorithm is currently supported as curve25519-sha256@libssh.org) Upstream-ID: 5e2b6db2e72667048cf426da43c0ee3fc777baa2
2016-09-22upstream commitdjm@openbsd.org
correctly return errors from kex_send_ext_info(). Fix from Sami Farin via https://github.com/openssh/openssh-portable/pull/50 Upstream-ID: c85999af28aaecbf92cfa2283381df81e839b42c
2016-09-21upstream commitmarkus@openbsd.org
move inbound NEWKEYS handling to kex layer; otherwise early NEWKEYS causes NULL deref; found by Robert Swiecki/honggfuzz; fixed with & ok djm@ Upstream-ID: 9a68b882892e9f51dc7bfa9f5a423858af358b2f
2016-09-13upstream commitdjm@openbsd.org
list all supported signature algorithms in the server-sig-algs Reported by mb AT smartftp.com in bz#2547 and (independantly) Ron Frederick; ok markus@ Upstream-ID: ddf702d721f54646b11ef2cee6d916666cb685cd
2016-09-12upstream commitderaadt@openbsd.org
Add MAXIMUM(), MINIMUM(), and ROUNDUP() to misc.h, then use those definitions rather than pulling <sys/param.h> and unknown namespace pollution. ok djm markus dtucker Upstream-ID: 712cafa816c9f012a61628b66b9fbd5687223fb8
2016-09-12upstream commitmarkus@openbsd.org
update ext_info_c every time we receive a kexinit msg; fixes sending of ext_info if privsep is disabled; report Aris Adamantiadis & Mancha; ok djm@ Upstream-ID: 2ceaa1076e19dbd3542254b4fb8e42d608f28856
2016-07-15missing openssl/dh.hDamien Miller
2016-05-02upstream commitdjm@openbsd.org
add support for additional fixed DH groups from draft-ietf-curdle-ssh-kex-sha2-03 diffie-hellman-group14-sha256 (2K group) diffie-hellman-group16-sha512 (4K group) diffie-hellman-group18-sha512 (8K group) based on patch from Mark D. Baushke and Darren Tucker ok markus@ Upstream-ID: ac00406ada4f0dfec41585ca0839f039545bc46f
2016-02-08upstream commitdjm@openbsd.org
refactor activation of rekeying This makes automatic rekeying internal to the packet code (previously the server and client loops needed to assist). In doing to it makes application of rekey limits more accurate by accounting for packets about to be sent as well as packets queued during rekeying events themselves. Based on a patch from dtucker@ which was in turn based on a patch Aleksander Adamowski in bz#2521; ok markus@ Upstream-ID: a441227fd64f9739850ca97b4cf794202860fcd8
2016-01-27upstream commitmarkus@openbsd.org
remove roaming support; ok djm@ Upstream-ID: 2cab8f4b197bc95776fb1c8dc2859dad0c64dc56
2015-12-18upstream commitdjm@openbsd.org
unbreak connections with peers that set first_kex_follows; fix from Matt Johnston va bz#2515 Upstream-ID: decc88ec4fc7515594fdb42b04aa03189a44184b
2015-12-11upstream commitmmcc@openbsd.org
Remove NULL-checks before free(). ok dtucker@ Upstream-ID: e3d3cb1ce900179906af36517b5eea0fb15e6ef8
2015-12-07upstream commitmarkus@openbsd.org
implement SHA2-{256,512} for RSASSA-PKCS1-v1_5 signatures (user and host auth) based on draft-rsa-dsa-sha2-256-03.txt and draft-ssh-ext-info-04.txt; with & ok djm@ Upstream-ID: cf82ce532b2733e5c4b34bb7b7c94835632db309
2015-11-16upstream commitdjm@openbsd.org
send SSH2_MSG_UNIMPLEMENTED replies to unexpected messages during KEX; bz#2949, ok dtucker@ Upstream-ID: 2b3abdff344d53c8d505f45c83a7b12e84935786
2015-10-14upstream commitdjm@openbsd.org
free the correct IV length, don't assume it's always the cipher blocksize; ok dtucker@ Upstream-ID: c260d9e5ec73628d9ff4b067fbb060eff5a7d298
2015-08-22upstream commitdjm@openbsd.org
Improve printing of KEX offers and decisions The debug output now labels the client and server offers and the negotiated options. ok markus@ Upstream-ID: 8db921b3f92a4565271b1c1fbce6e7f508e1a2cb
2015-07-30upstream commitdjm@openbsd.org
Allow ssh_config and sshd_config kex parameters options be prefixed by a '+' to indicate that the specified items be appended to the default rather than replacing it. approach suggested by dtucker@, feedback dlg@, ok markus@ Upstream-ID: 0f901137298fc17095d5756ff1561a7028e8882a
2015-07-29upstream commitdjm@openbsd.org
fix bug in previous; was printing incorrect string for failed host key algorithms negotiation Upstream-ID: 22c0dc6bc61930513065d92e11f0753adc4c6e6e
2015-07-29upstream commitdjm@openbsd.org
include the peer's offer when logging a failure to negotiate a mutual set of algorithms (kex, pubkey, ciphers, etc.) ok markus@ Upstream-ID: bbb8caabf5c01790bb845f5ce135565248d7c796
2015-04-29upstream commitdjm@openbsd.org
don't try to cleanup NULL KEX proposals in kex_prop_free(); found by Jukka Taimisto and Markus Hietava
2015-03-11make unit tests work for !OPENSSH_HAS_ECCDamien Miller
2015-01-30upstream commitdjm@openbsd.org
fix ssh protocol 1, spotted by miod@
2015-01-27upstream commitdjm@openbsd.org
correctly match ECDSA subtype (== curve) for offered/recevied host keys. Fixes connection-killing host key mismatches when a server offers multiple ECDSA keys with different curve type (an extremely unlikely configuration). ok markus, "looks mechanical" deraadt@
2015-01-26upstream commitderaadt@openbsd.org
Reduce use of <sys/param.h> and transition to <limits.h> throughout. ok djm markus
2015-01-20upstream commitmarkus@openbsd.org
adapt kex to sshbuf and struct ssh; ok djm@
2015-01-20upstream commitmarkus@openbsd.org
move dispatch to struct ssh; ok djm@
2015-01-20upstream commitmarkus@openbsd.org
update packet.c & isolate, introduce struct ssh a) switch packet.c to buffer api and isolate per-connection info into struct ssh b) (de)serialization of the state is moved from monitor to packet.c c) the old packet.c API is implemented in opacket.[ch] d) compress.c/h is removed and integrated into packet.c with and ok djm@
2015-01-15support --without-openssl at configure timeDamien Miller
Disables and removes dependency on OpenSSL. Many features don't work and the set of crypto options is greatly restricted. This will only work on system with native arc4random or /dev/urandom. Considered highly experimental for now.
2014-10-12remove duplicated KEX_DH1 entryDamien Miller
2014-05-15 - markus@cvs.openbsd.org 2014/04/29 18:01:49Damien Miller
[auth.c authfd.c authfile.c bufaux.c cipher.c cipher.h hostfile.c] [kex.c key.c mac.c monitor.c monitor_wrap.c myproposal.h packet.c] [roaming_client.c ssh-agent.c ssh-keygen.c ssh-keyscan.c ssh-keysign.c] [ssh-pkcs11.h ssh.c sshconnect.c sshconnect2.c sshd.c] make compiling against OpenSSL optional (make OPENSSL=no); reduces algorithms to curve25519, aes-ctr, chacha, ed25519; allows us to explore further options; with and ok djm
2014-02-04 - djm@cvs.openbsd.org 2014/02/02 03:44:32Damien Miller
[auth1.c auth2-chall.c auth2-passwd.c authfile.c bufaux.c bufbn.c] [buffer.c cipher-3des1.c cipher.c clientloop.c gss-serv.c kex.c] [kexdhc.c kexdhs.c kexecdhc.c kexgexc.c kexecdhs.c kexgexs.c key.c] [monitor.c monitor_wrap.c packet.c readpass.c rsa.c serverloop.c] [ssh-add.c ssh-agent.c ssh-dss.c ssh-ecdsa.c ssh-ed25519.c] [ssh-keygen.c ssh-rsa.c sshconnect.c sshconnect1.c sshconnect2.c] [sshd.c] convert memset of potentially-private data to explicit_bzero()
2014-01-26 - markus@cvs.openbsd.org 2014/01/25 20:35:37Damien Miller
[kex.c] dh_need needs to be set to max(seclen, blocksize, ivlen, mac_len) ok dtucker@, noted by mancha
2014-01-26 - dtucker@cvs.openbsd.org 2014/01/25 10:12:50Damien Miller
[cipher.c cipher.h kex.c kex.h kexgexc.c] Add a special case for the DH group size for 3des-cbc, which has an effective strength much lower than the key size. This causes problems with some cryptlib implementations, which don't support group sizes larger than 4k but also don't use the largest group size it does support as specified in the RFC. Based on a patch from Petr Lautrbach at Redhat, reduced by me with input from Markus. ok djm@ markus@
2014-01-12 - djm@cvs.openbsd.org 2014/01/12 08:13:13Damien Miller
[bufaux.c buffer.h kex.c kex.h kexc25519.c kexc25519c.c kexc25519s.c] [kexdhc.c kexdhs.c kexecdhc.c kexecdhs.c kexgexc.c kexgexs.c] avoid use of OpenSSL BIGNUM type and functions for KEX with Curve25519 by adding a buffer_put_bignum2_from_string() that stores a string using the bignum encoding rules. Will make it easier to build a reduced-feature OpenSSH without OpenSSL in the future; ok markus@
2014-01-10 - djm@cvs.openbsd.org 2014/01/09 23:20:00Damien Miller
[digest.c digest.h hostfile.c kex.c kex.h kexc25519.c kexc25519c.c] [kexc25519s.c kexdh.c kexecdh.c kexecdhc.c kexecdhs.c kexgex.c kexgexc.c] [kexgexs.c key.c key.h roaming_client.c roaming_common.c schnorr.c] [schnorr.h ssh-dss.c ssh-ecdsa.c ssh-rsa.c sshconnect2.c] Introduce digest API and use it to perform all hashing operations rather than calling OpenSSL EVP_Digest* directly. Will make it easier to build a reduced-feature OpenSSH without OpenSSL in future; feedback, ok markus@
2013-11-09 - (dtucker) [configure.ac kex.c key.c myproposal.h] Test for the presence ofDarren Tucker
NID_X9_62_prime256v1, NID_secp384r1 and NID_secp521r1 and test that the latter actually works before using it. Fedora (at least) has NID_secp521r1 that doesn't work (see https://bugzilla.redhat.com/show_bug.cgi?id=1021897).
2013-11-08 - (dtucker) [kex.c] Only enable CURVE25519_SHA256 if we actually haveDarren Tucker
EVP_sha256.
2013-11-08 - dtucker@cvs.openbsd.org 2013/11/07 11:58:27Damien Miller
[cipher.c cipher.h kex.c kex.h mac.c mac.h servconf.c ssh.c] Output the effective values of Ciphers, MACs and KexAlgorithms when the default has not been overridden. ok markus@
2013-11-04 - markus@cvs.openbsd.org 2013/11/02 21:59:15Damien Miller
[kex.c kex.h myproposal.h ssh-keyscan.c sshconnect2.c sshd.c] use curve25519 for default key exchange (curve25519-sha256@libssh.org); initial patch from Aris Adamantiadis; ok djm@
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