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2023-03-10upstream: modify parentheses in conditionals to make it clearer what isjcs@openbsd.org
being assigned and what is being checked ok djm dtucker OpenBSD-Commit-ID: 19c10baa46ae559474409f75a5cb3d0eade7a9b8
2023-03-09upstream: include destination constraints for smartcard keys too.djm@openbsd.org
Spotted by Luci Stanescu; ok deraadt@ markus@ OpenBSD-Commit-ID: add879fac6903a1cb1d1e42c4309e5359c3d870f
2023-03-05upstream: Remove unused compat.h includes.dtucker@openbsd.org
We've previously removed a lot of the really old compatibility code, and with it went the need to include compat.h in most of the files that have it. OpenBSD-Commit-ID: 5af8baa194be00a3092d17598e88a5b29f7ea2b4
2022-04-27upstream: Add authfd path to debug output. ok markus@dtucker@openbsd.org
OpenBSD-Commit-ID: f735a17d1a6f2bee63bfc609d76ef8db8c090890
2021-12-20upstream: ssh-add side of destination constraintsdjm@openbsd.org
Have ssh-add accept a list of "destination constraints" that allow restricting where keys may be used in conjunction with a ssh-agent/ssh that supports session ID/hostkey binding. Constraints are specified as either "[user@]host-pattern" or "host-pattern>[user@]host-pattern". The first form permits a key to be used to authenticate as the specified user to the specified host. The second form permits a key that has previously been permitted for use at a host to be available via a forwarded agent to an additional host. For example, constraining a key with "user1@host_a" and "host_a>host_b". Would permit authentication as "user1" at "host_a", and allow the key to be available on an agent forwarded to "host_a" only for authentication to "host_b". The key would not be visible on agent forwarded to other hosts or usable for authentication there. Internally, destination constraints use host keys to identify hosts. The host patterns are used to obtain lists of host keys for that destination that are communicated to the agent. The user/hostkeys are encoded using a new restrict-destination-v00@openssh.com key constraint. host keys are looked up in the default client user/system known_hosts files. It is possible to override this set on the command-line. feedback Jann Horn & markus@ ok markus@ OpenBSD-Commit-ID: ef47fa9ec0e3c2a82e30d37ef616e245df73163e
2021-12-20upstream: ssh client side of bindingdjm@openbsd.org
send session ID, hostkey, signature and a flag indicating whether the agent connection is being forwarded to ssh agent each time a connection is opened via a new "session-bind@openssh.com" agent extension. ok markus@ OpenBSD-Commit-ID: 2f154844fe13167d3ab063f830d7455fcaa99135
2021-01-26upstream: factor out common code in the agent clientdjm@openbsd.org
Add a ssh_request_reply_decode() function that sends a message to the agent, reads and parses a success/failure reply. Use it for all requests that only expect success/failure ok markus@ OpenBSD-Commit-ID: e0c1f4d5e6cfa525d62581e2b8de93be0cb85adb
2020-10-29upstream: whitespace; no code changedjm@openbsd.org
OpenBSD-Commit-ID: efefc1c47e880887bdee8cd2127ca93177eaad79
2020-10-20upstream: Adapt XMSS to new logging infrastructure. With markus@, okdtucker@openbsd.org
djm@. OpenBSD-Commit-ID: 9c35ec3aa0f710e4e3325187ceff4fa3791686de
2020-06-26upstream: constify a few things; ok dtucker (as part of anotherdjm@openbsd.org
diff) OpenBSD-Commit-ID: 7c17fc987085994d752304bd20b1ae267a9bcdf6
2020-03-13upstream: ssh_fetch_identitylist() returns the return value frommarkus@openbsd.org
ssh_request_reply() so we should also check against != 0 ok djm OpenBSD-Commit-ID: 28d0028769d03e665688c61bb5fd943e18614952
2020-02-28upstream: change explicit_bzero();free() to freezero()jsg@openbsd.org
While freezero() returns early if the pointer is NULL the tests for NULL in callers are left to avoid warnings about passing an uninitialised size argument across a function boundry. ok deraadt@ djm@ OpenBSD-Commit-ID: 2660fa334fcc7cd05ec74dd99cb036f9ade6384a
2019-12-21upstream: Allow forwarding a different agent socket to the pathdjm@openbsd.org
specified by $SSH_AUTH_SOCK, by extending the existing ForwardAgent option to accepting an explicit path or the name of an environment variable in addition to yes/no. Patch by Eric Chiang, manpage by me; ok markus@ OpenBSD-Commit-ID: 98f2ed80bf34ea54d8b2ddd19ac14ebbf40e9265
2019-11-15upstream: stdarg.h required more broadly; ok djmderaadt@openbsd.org
OpenBSD-Commit-ID: b5b15674cde1b54d6dbbae8faf30d47e6e5d6513
2019-11-13upstream: enable ed25519 support; ok djmmarkus@openbsd.org
OpenBSD-Commit-ID: 1a399c5b3ef15bd8efb916110cf5a9e0b554ab7e
2019-11-01upstream: add new agent key constraint for U2F/FIDO providerdjm@openbsd.org
feedback & ok markus@ OpenBSD-Commit-ID: d880c380170704280b4003860a1744d286c7a172
2019-09-03upstream: authfd: add function to check if key is in agentdjm@openbsd.org
This commit adds a helper function which allows the caller to check if a given public key is present in ssh-agent. work by Sebastian Kinne; ok markus@ OpenBSD-Commit-ID: d43c5826353e1fdc1af71eb42961b30782c7bd13
2019-09-03upstream: fix memleak in ssh_free_identitylist(); ok markus@djm@openbsd.org
OpenBSD-Commit-ID: aa51f77ae2c5330a1f61b2d22933f24a443f9abf
2019-07-05upstream: When system calls indicate an error they return -1, notderaadt@openbsd.org
some arbitrary value < 0. errno is only updated in this case. Change all (most?) callers of syscalls to follow this better, and let's see if this strictness helps us in the future. OpenBSD-Commit-ID: 48081f00db7518e3b712a49dca06efc2a5428075
2019-06-21upstream: Add protection for private keys at rest in RAM againstdjm@openbsd.org
speculation and memory sidechannel attacks like Spectre, Meltdown, Rowhammer and Rambleed. This change encrypts private keys when they are not in use with a symmetic key that is derived from a relatively large "prekey" consisting of random data (currently 16KB). Attackers must recover the entire prekey with high accuracy before they can attempt to decrypt the shielded private key, but the current generation of attacks have bit error rates that, when applied cumulatively to the entire prekey, make this unlikely. Implementation-wise, keys are encrypted "shielded" when loaded and then automatically and transparently unshielded when used for signatures or when being saved/serialised. Hopefully we can remove this in a few years time when computer architecture has become less unsafe. been in snaps for a bit already; thanks deraadt@ ok dtucker@ deraadt@ OpenBSD-Commit-ID: 19767213c312e46f94b303a512ef8e9218a39bd4
2018-12-28upstream: Request RSA-SHA2 signatures fordjm@openbsd.org
rsa-sha2-{256|512}-cert-v01@openssh.com cert algorithms; ok markus@ OpenBSD-Commit-ID: afc6f7ca216ccd821656d1c911d2a3deed685033
2018-12-07upstream: don't attempt to connect to empty SSH_AUTH_SOCK; bz#293djm@openbsd.org
OpenBSD-Commit-ID: 0e8fc8f19f14b21adef7109e0faa583d87c0e929
2018-07-10upstream: replace cast with call to sshbuf_mutable_ptr(); ok djm@markus@openbsd.org
OpenBSD-Commit-ID: 4dfe9d29fa93d9231645c89084f7217304f7ba29
2018-07-03upstream: Improve strictness and control over RSA-SHA2 signaturedjm@openbsd.org
In ssh, when an agent fails to return a RSA-SHA2 signature when requested and falls back to RSA-SHA1 instead, retry the signature to ensure that the public key algorithm sent in the SSH_MSG_USERAUTH matches the one in the signature itself. In sshd, strictly enforce that the public key algorithm sent in the SSH_MSG_USERAUTH message matches what appears in the signature. Make the sshd_config PubkeyAcceptedKeyTypes and HostbasedAcceptedKeyTypes options control accepted signature algorithms (previously they selected supported key types). This allows these options to ban RSA-SHA1 in favour of RSA-SHA2. Add new signature algorithms "rsa-sha2-256-cert-v01@openssh.com" and "rsa-sha2-512-cert-v01@openssh.com" to force use of RSA-SHA2 signatures with certificate keys. feedback and ok markus@ OpenBSD-Commit-ID: c6e9f6d45eed8962ad502d315d7eaef32c419dde
2018-04-10upstream: lots of typos in comments/docs. Patch from Karsten Weissdjm@openbsd.org
after checking with codespell tool (https://github.com/lucasdemarchi/codespell) OpenBSD-Commit-ID: 373222f12d7ab606598a2d36840c60be93568528
2018-02-26upstream: Add experimental support for PQC XMSS keys (Extendedmarkus@openbsd.org
Hash-Based Signatures) The code is not compiled in by default (see WITH_XMSS in Makefile.inc) Joint work with stefan-lukas_gazdag at genua.eu See https://tools.ietf.org/html/draft-irtf-cfrg-xmss-hash-based-signatures-12 ok djm@ OpenBSD-Commit-ID: ef3eccb96762a5d6f135d7daeef608df7776a7ac
2018-02-10upstream commitdjm@openbsd.org
constify some private key-related functions; based on https://github.com/openssh/openssh-portable/pull/56 by Vincent Brillault OpenBSD-Commit-ID: dcb94a41834a15f4d00275cb5051616fdc4c988c
2018-01-23upstream commitdjm@openbsd.org
Drop compatibility hacks for some ancient SSH implementations, including ssh.com <=2.* and OpenSSH <= 3.*. These versions were all released in or before 2001 and predate the final SSH RFCs. The hacks in question aren't necessary for RFC- compliant SSH implementations. ok markus@ OpenBSD-Commit-ID: 4be81c67db57647f907f4e881fb9341448606138
2017-07-21upstream commitdjm@openbsd.org
remove post-SSHv1 removal dead code from rsa.c and merge the remaining bit that it still used into ssh-rsa.c; ok markus Upstream-ID: ac8a048d24dcd89594b0052ea5e3404b473bfa2f
2017-06-28upstream commitdjm@openbsd.org
Allow ssh-keygen to use a key held in ssh-agent as a CA when signing certificates. bz#2377 ok markus Upstream-ID: fb42e920b592edcbb5b50465739a867c09329c8f
2017-05-08upstream commitnaddy@openbsd.org
more simplification and removal of SSHv1-related code; ok djm@ Upstream-ID: d2f041aa0b79c0ebd98c68a01e5a0bfab2cf3b55
2017-05-08upstream commitdjm@openbsd.org
since a couple of people have asked, leave a comment explaining why we retain SSH v.1 support in the "delete all keys from agent" path. Upstream-ID: 4b42dcfa339813c15fe9248a2c1b7ed41c21bbb4
2017-05-01upstream commitdjm@openbsd.org
unifdef WITH_SSH1 ok markus@ Upstream-ID: 9716e62a883ef8826c57f4d33b4a81a9cc7755c7
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
2015-09-03upstream commitjsg@openbsd.org
Fix occurrences of "r = func() != 0" which result in the wrong error codes being returned due to != having higher precedence than =. ok deraadt@ markus@ Upstream-ID: 5fc35c9fc0319cc6fca243632662d2f06b5fd840
2015-07-15upstream commitdjm@openbsd.org
delete support for legacy v00 certificates; "sure" markus@ dtucker@ Upstream-ID: b5b9bb5f9202d09e88f912989d74928601b6636f
2015-03-27upstream commitmarkus@openbsd.org
sigp and lenp are not optional in ssh_agent_sign(); ok djm@
2015-03-27upstream commitmarkus@openbsd.org
unbreak ssh_agent_sign (lenp vs *lenp)
2015-03-27upstream commitmarkus@openbsd.org
consistent check for NULL as noted by Nicholas Lemonias; ok djm@
2015-01-15upstream commitdjm@openbsd.org
move authfd.c and its tentacles to the new buffer/key API; ok markus@
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 - tedu@cvs.openbsd.org 2014/01/31 16:39:19Damien Miller
[auth2-chall.c authfd.c authfile.c bufaux.c bufec.c canohost.c] [channels.c cipher-chachapoly.c clientloop.c configure.ac hostfile.c] [kexc25519.c krl.c monitor.c sandbox-systrace.c session.c] [sftp-client.c ssh-keygen.c ssh.c sshconnect2.c sshd.c sshlogin.c] [openbsd-compat/explicit_bzero.c openbsd-compat/openbsd-compat.h] replace most bzero with explicit_bzero, except a few that cna be memset ok djm dtucker
2013-12-29 - djm@cvs.openbsd.org 2013/12/29 04:29:25Damien Miller
[authfd.c] allow deletion of ed25519 keys from the agent
2013-12-07 - markus@cvs.openbsd.org 2013/12/06 13:39:49Damien Miller
[authfd.c authfile.c key.c key.h myproposal.h pathnames.h readconf.c] [servconf.c ssh-agent.c ssh-keygen.c ssh-keyscan.1 ssh-keyscan.c] [ssh-keysign.c ssh.c ssh_config.5 sshd.8 sshd.c verify.c ssh-ed25519.c] [sc25519.h sc25519.c hash.c ge25519_base.data ge25519.h ge25519.c] [fe25519.h fe25519.c ed25519.c crypto_api.h blocks.c] support ed25519 keys (hostkeys and user identities) using the public domain ed25519 reference code from SUPERCOP, see http://ed25519.cr.yp.to/software.html feedback, help & ok djm@
2013-12-07 - markus@cvs.openbsd.org 2013/12/06 13:30:08Damien Miller
[authfd.c key.c key.h ssh-agent.c] move private key (de)serialization to key.c; ok djm
2013-11-08 - djm@cvs.openbsd.org 2013/11/08 00:39:15Damien Miller
[auth-options.c auth2-chall.c authfd.c channels.c cipher-3des1.c] [clientloop.c gss-genr.c monitor_mm.c packet.c schnorr.c umac.c] [sftp-client.c sftp-glob.c] use calloc for all structure allocations; from markus@
2013-06-02 - djm@cvs.openbsd.org 2013/05/17 00:13:13Darren Tucker
[xmalloc.h cipher.c sftp-glob.c ssh-keyscan.c ssh.c sftp-common.c ssh-ecdsa.c auth2-chall.c compat.c readconf.c kexgexs.c monitor.c gss-genr.c cipher-3des1.c kex.c monitor_wrap.c ssh-pkcs11-client.c auth-options.c rsa.c auth2-pubkey.c sftp.c hostfile.c auth2.c servconf.c auth.c authfile.c xmalloc.c uuencode.c sftp-client.c auth2-gss.c sftp-server.c bufaux.c mac.c session.c jpake.c kexgexc.c sshconnect.c auth-chall.c auth2-passwd.c sshconnect1.c buffer.c kexecdhs.c kexdhs.c ssh-rsa.c auth1.c ssh-pkcs11.c auth2-kbdint.c kexdhc.c sshd.c umac.c ssh-dss.c auth2-jpake.c bufbn.c clientloop.c monitor_mm.c scp.c roaming_client.c serverloop.c key.c auth-rsa.c ssh-pkcs11-helper.c ssh-keysign.c ssh-keygen.c match.c channels.c sshconnect2.c addrmatch.c mux.c canohost.c kexecdhc.c schnorr.c ssh-add.c misc.c auth2-hostbased.c ssh-agent.c bufec.c groupaccess.c dns.c packet.c readpass.c authfd.c moduli.c] bye, bye xfree(); ok markus@
2011-08-06 - tedu@cvs.openbsd.org 2011/07/06 18:09:21Damien Miller
[authfd.c] bzero the agent address. the kernel was for a while very cranky about these things. evne though that's fixed, always good to initialize memory. ok deraadt djm
2011-05-20 - OpenBSD CVS SyncDamien Miller
- djm@cvs.openbsd.org 2011/05/15 08:09:01 [authfd.c monitor.c serverloop.c] use FD_CLOEXEC consistently; patch from zion AT x96.org
2010-09-10 - (djm) [authfd.c authfile.c bufec.c buffer.h configure.ac kex.h kexecdh.c]Damien Miller
[kexecdhc.c kexecdhs.c key.c key.h myproposal.h packet.c readconf.c] [ssh-agent.c ssh-ecdsa.c ssh-keygen.c ssh.c] Disable ECDH and ECDSA on platforms that don't have the requisite OpenSSL support. ok dtucker@
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