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path: root/sshconnect.c
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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
2019-05-08upstream: Free host on exit path. Patch from markus atdtucker@openbsd.org
blueflash.cc, ok djm@ OpenBSD-Commit-ID: c54e9945d93c4ce28350d8b9fa8b71f744ef2b5a
2019-03-01upstream: dup stdout/in for proxycommand=-, otherwise stdout mightmarkus@openbsd.org
be redirected to /dev/null; ok djm@ OpenBSD-Commit-ID: 97dfce4c47ed4055042de8ebde85b7d88793e595
2019-02-01upstream: Save connection timeout and restore for 2nd anddtucker@openbsd.org
subsequent attempts, preventing them from having no timeout. bz#2918, ok djm@ OpenBSD-Commit-ID: 4977f1d0521d9b6bba0c9a20d3d226cefac48292
2019-01-25upstream: Accept the host key fingerprint as a synonym for "yes"dtucker@openbsd.org
when accepting an unknown host key. This allows you to paste a fingerprint obtained out of band into the yes/no prompt and have the client do the comparison for you. ok markus@ djm@ OpenBSD-Commit-ID: 3c47d10b9f43d3d345e044fd9ec09709583a2767
2019-01-20upstream: convert sshconnect.c to new packet APIdjm@openbsd.org
with & ok markus@ OpenBSD-Commit-ID: 222337cf6c96c347f1022d976fac74b4257c061f
2019-01-20upstream: begin landing remaining refactoring of packet parsingdjm@openbsd.org
API, started almost exactly six years ago. This change stops including the old packet_* API by default and makes each file that requires the old API include it explicitly. We will commit file-by-file refactoring to remove the old API in consistent steps. with & ok markus@ OpenBSD-Commit-ID: 93c98a6b38f6911fd1ae025a1ec57807fb4d4ef4
2018-12-27upstream: move client/server SSH-* banners to buffers underdjm@openbsd.org
ssh->kex and factor out the banner exchange. This eliminates some common code from the client and server. Also be more strict about handling \r characters - these should only be accepted immediately before \n (pointed out by Jann Horn). Inspired by a patch from Markus Schmidt. (lots of) feedback and ok markus@ OpenBSD-Commit-ID: 1cc7885487a6754f63641d7d3279b0941890275b
2018-11-19upstream: Fix inverted logic for redirecting ProxyCommand stderr todtucker@openbsd.org
/dev/null. Fixes mosh in proxycommand mode that was broken by the previous ProxyCommand change that was reported by matthieu@. ok djm@ danj@ OpenBSD-Commit-ID: c6fc9641bc250221a0a81c6beb2e72d603f8add6
2018-11-16upstream: redirect stderr of ProxyCommands to /dev/null when ssh isdjm@openbsd.org
started with ControlPersist; based on patch from Steffen Prohaska OpenBSD-Commit-ID: 1bcaa14a03ae80369d31021271ec75dce2597957
2018-10-22upstream: struct sockaddr_storage is guaranteed to be large enough,florian@openbsd.org
no need to check the size. OK kn, deraadt OpenBSD-Commit-ID: 0aa56e92eb49c79f495b31a5093109ec5841f439
2018-09-20upstream: add CASignatureAlgorithms option for the client, allowingdjm@openbsd.org
it to specify which signature algorithms may be used by CAs when signing certificates. Useful if you want to ban RSA/SHA1; ok markus@ OpenBSD-Commit-ID: 9159e5e9f67504829bf53ff222057307a6e3230f
2018-07-31upstream: Now that ssh can't be setuid, remove thedtucker@openbsd.org
original_real_uid and original_effective_uid globals and replace with calls to plain getuid(). ok djm@ OpenBSD-Commit-ID: 92561c0cd418d34e6841e20ba09160583e27b68c
2018-07-20upstream: Fix typo in comment. From Alexandru Iacob via github.dtucker@openbsd.org
OpenBSD-Commit-ID: eff4ec07c6c8c5483533da43a4dda37d72ef7f1d
2018-07-19upstream: Deprecate UsePrivilegedPort now that support for runningdtucker@openbsd.org
ssh(1) setuid has been removed, remove supporting code and clean up references to it in the man pages We have not shipped ssh(1) the setuid bit since 2002. If ayone really needs to make connections from a low port number this can be implemented via a small setuid ProxyCommand. ok markus@ jmc@ djm@ OpenBSD-Commit-ID: d03364610b7123ae4c6792f5274bd147b6de717e
2018-07-19upstream: Remove support for running ssh(1) setuid and fatal ifdtucker@openbsd.org
attempted. Do not link uidwap.c into ssh any more. Neuters UsePrivilegedPort, which will be marked as deprecated shortly. ok markus@ djm@ OpenBSD-Commit-ID: c4ba5bf9c096f57a6ed15b713a1d7e9e2e373c42
2018-07-12upstream: remove legacy key emulation layer; ok djm@markus@openbsd.org
OpenBSD-Commit-ID: 2b1f9619259e222bbd4fe9a8d3a0973eafb9dd8d
2018-07-10upstream: client: switch to sshbuf API; ok djm@markus@openbsd.org
OpenBSD-Commit-ID: 60cb0356114acc7625ab85105f6f6a7cd44a8d05
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
2018-02-23upstream: Add missing braces.dtucker@openbsd.org
Caught by the tinderbox's -Werror=misleading-indentation, ok djm@ OpenBSD-Commit-ID: d44656af594c3b2366eb87d6abcef83e1c88a6ca
2018-02-23Check for ifaddrs.h for BindInterface.Darren Tucker
BindInterface required getifaddr and friends so disable if not available (eg Solaris 10). We should be able to add support for some systems with a bit more work but this gets the building again.
2018-02-23upstream: Add BindInterface ssh_config directive and -Bdjm@openbsd.org
command-line argument to ssh(1) that directs it to bind its outgoing connection to the address of the specified network interface. BindInterface prefers to use addresses that aren't loopback or link- local, but will fall back to those if no other addresses of the required family are available on that interface. Based on patch by Mike Manning in bz#2820, ok dtucker@ OpenBSD-Commit-ID: c5064d285c2851f773dd736a2c342aa384fbf713
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
2018-02-09upstream commitdtucker@openbsd.org
ssh_free checks for and handles NULL args, remove NULL checks from remaining callers. ok djm@ OpenBSD-Commit-ID: bb926825c53724c069df68a93a2597f9192f7e7b
2018-01-24upstream commitstsp@openbsd.org
Add missing braces; fixes 'write: Socket is not connected' error in ssh. ok deraadt@ OpenBSD-Commit-ID: db73a3a9e147722d410866cac34d43ed52e1ad24
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
2018-01-23upstream commitdjm@openbsd.org
try harder to preserve errno during ssh_connect_direct() to make the final error message possibly accurate; bz#2814, ok dtucker@ OpenBSD-Commit-ID: 57de882cb47381c319b04499fef845dd0c2b46ca
2017-12-07upstream commitdjm@openbsd.org
don't accept junk after "yes" or "no" responses to hostkey prompts. bz#2803 reported by Maksim Derbasov; ok dtucker@ OpenBSD-Commit-ID: e1b159fb2253be973ce25eb7a7be26e6f967717c
2017-11-28upstream commitdtucker@openbsd.org@openbsd.org
Add monotime_ts and monotime_tv that return monotonic timespec and timeval respectively. Replace calls to gettimeofday() in packet timing with monotime_tv so that the callers will work over a clock step. Should prevent integer overflow during clock steps reported by wangle6 at huawei.com. "I like" markus@ OpenBSD-Commit-ID: 74d684264814ff806f197948b87aa732cb1b0b8a
2017-09-14upstream commitdjm@openbsd.org
Revert commitid: gJtIN6rRTS3CHy9b. ------------- identify the case where SSHFP records are missing but other DNS RR types are present and display a more useful error message for this case; patch by Thordur Bjornsson; bz#2501; ok dtucker@ ------------- This caused unexpected failures when VerifyHostKeyDNS=yes, SSHFP results are missing but the user already has the key in known_hosts Spotted by dtucker@ Upstream-ID: 97e31742fddaf72046f6ffef091ec0d823299920
2017-09-12upstream commitdjm@openbsd.org
refactor channels.c Move static state to a "struct ssh_channels" that is allocated at runtime and tracked as a member of struct ssh. Explicitly pass "struct ssh" to all channels functions. Replace use of the legacy packet APIs in channels.c. Rework sshd_config PermitOpen handling: previously the configuration parser would call directly into the channels layer. After the refactor this is not possible, as the channels structures are allocated at connection time and aren't available when the configuration is parsed. The server config parser now tracks PermitOpen itself and explicitly configures the channels code later. ok markus@ Upstream-ID: 11828f161656b965cc306576422613614bea2d8f
2017-09-04upstream commitdjm@openbsd.org
Expand ssh_config's StrictModes option with two new settings: StrictModes=accept-new will automatically accept hitherto-unseen keys but will refuse connections for changed or invalid hostkeys. StrictModes=off is the same as StrictModes=no Motivation: StrictModes=no combines two behaviours for host key processing: automatically learning new hostkeys and continuing to connect to hosts with invalid/changed hostkeys. The latter behaviour is quite dangerous since it removes most of the protections the SSH protocol is supposed to provide. Quite a few users want to automatically learn hostkeys however, so this makes that feature available with less danger. At some point in the future, StrictModes=no will change to be a synonym for accept-new, with its current behaviour remaining available via StrictModes=off. bz#2400, suggested by Michael Samuel; ok markus Upstream-ID: 0f55502bf75fc93a74fb9853264a8276b9680b64
2017-09-04upstream commitdjm@openbsd.org
identify the case where SSHFP records are missing but other DNS RR types are present and display a more useful error message for this case; patch by Thordur Bjornsson; bz#2501; ok dtucker@ Upstream-ID: 8f7a5a8344f684823d8317a9708b63e75be2c244
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
2017-06-24upstream commitdjm@openbsd.org
switch sshconnect.c from (slightly abused) select() to poll(); ok deraadt@ a while back Upstream-ID: efc1937fc591bbe70ac9e9542bb984f354c8c175
2017-06-24upstream commitdjm@openbsd.org
use HostKeyAlias if specified instead of hostname for matching host certificate principal names; bz#2728; ok dtucker@ Upstream-ID: dc2e11c83ae9201bbe74872a0c895ae9725536dd
2017-05-31upstream commitmarkus@openbsd.org
switch sshconnect.c to modern APIs; ok djm@ Upstream-ID: 27be17f84b950d5e139b7a9b281aa487187945ad
2017-05-31upstream commitmarkus@openbsd.org
switch from Key typedef with struct sshkey; ok djm@ Upstream-ID: 3067d33e04efbe5131ce8f70668c47a58e5b7a1f
2017-05-01upstream commitdjm@openbsd.org
remove unused variable Upstream-ID: 66011f00819d0e71b14700449a98414033284516
2017-05-01upstream commitdjm@openbsd.org
remove KEY_RSA1 ok markus@ Upstream-ID: 7408517b077c892a86b581e19f82a163069bf133
2017-05-01upstream commitdjm@openbsd.org
remove compat20/compat13/compat15 variables ok markus@ Upstream-ID: 43802c035ceb3fef6c50c400e4ecabf12354691c
2017-05-01upstream commitdjm@openbsd.org
remove options.protocol and client Protocol configuration knob ok markus@ Upstream-ID: 5a967f5d06e2d004b0235457b6de3a9a314e9366
2017-05-01upstream commitdjm@openbsd.org
unifdef WITH_SSH1 ok markus@ Upstream-ID: 9716e62a883ef8826c57f4d33b4a81a9cc7755c7
2017-03-10upstream commitdtucker@openbsd.org
Plug descriptor leaks of auth_sock. From jjelen at redhat.com via bz#2687, ok djm@ Upstream-ID: 248acb99a5ed2fdca37d1aa33c0fcee7be286d88
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
2016-01-27upstream commitmarkus@openbsd.org
fd leaks; report Qualys Security Advisory team; ok deraadt@ Upstream-ID: 4ec0f12b9d8fa202293c9effa115464185aa071d
2016-01-27upstream commitmarkus@openbsd.org
remove roaming support; ok djm@ Upstream-ID: 2cab8f4b197bc95776fb1c8dc2859dad0c64dc56
2015-11-20upstream commitdjm@openbsd.org
add cast to make -Werror clean Upstream-ID: 288db4f8f810bd475be01320c198250a04ff064d
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