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From Zachary Harmany via github.com/openssh/openssh-portable/pull/118
ok dtucker@
OpenBSD-Commit-ID: 7eebf1b7695f50c66d42053d352a4db9e8fb84b6
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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
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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
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blueflash.cc, ok djm@
OpenBSD-Commit-ID: c54e9945d93c4ce28350d8b9fa8b71f744ef2b5a
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be redirected to /dev/null; ok djm@
OpenBSD-Commit-ID: 97dfce4c47ed4055042de8ebde85b7d88793e595
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subsequent attempts, preventing them from having no timeout. bz#2918, ok
djm@
OpenBSD-Commit-ID: 4977f1d0521d9b6bba0c9a20d3d226cefac48292
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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
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with & ok markus@
OpenBSD-Commit-ID: 222337cf6c96c347f1022d976fac74b4257c061f
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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
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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
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/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
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started with ControlPersist; based on patch from Steffen Prohaska
OpenBSD-Commit-ID: 1bcaa14a03ae80369d31021271ec75dce2597957
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no need to check the size. OK kn, deraadt
OpenBSD-Commit-ID: 0aa56e92eb49c79f495b31a5093109ec5841f439
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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
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original_real_uid and original_effective_uid globals and replace with calls
to plain getuid(). ok djm@
OpenBSD-Commit-ID: 92561c0cd418d34e6841e20ba09160583e27b68c
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OpenBSD-Commit-ID: eff4ec07c6c8c5483533da43a4dda37d72ef7f1d
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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
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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
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OpenBSD-Commit-ID: 2b1f9619259e222bbd4fe9a8d3a0973eafb9dd8d
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OpenBSD-Commit-ID: 60cb0356114acc7625ab85105f6f6a7cd44a8d05
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after checking with codespell tool
(https://github.com/lucasdemarchi/codespell)
OpenBSD-Commit-ID: 373222f12d7ab606598a2d36840c60be93568528
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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
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Caught by the tinderbox's -Werror=misleading-indentation, ok djm@
OpenBSD-Commit-ID: d44656af594c3b2366eb87d6abcef83e1c88a6ca
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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.
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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
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constify some private key-related functions; based on
https://github.com/openssh/openssh-portable/pull/56 by Vincent Brillault
OpenBSD-Commit-ID: dcb94a41834a15f4d00275cb5051616fdc4c988c
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ssh_free checks for and handles NULL args, remove NULL
checks from remaining callers. ok djm@
OpenBSD-Commit-ID: bb926825c53724c069df68a93a2597f9192f7e7b
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Add missing braces; fixes 'write: Socket is not
connected' error in ssh. ok deraadt@
OpenBSD-Commit-ID: db73a3a9e147722d410866cac34d43ed52e1ad24
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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
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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
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don't accept junk after "yes" or "no" responses to
hostkey prompts. bz#2803 reported by Maksim Derbasov; ok dtucker@
OpenBSD-Commit-ID: e1b159fb2253be973ce25eb7a7be26e6f967717c
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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
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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@
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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
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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
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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
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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
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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
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switch sshconnect.c from (slightly abused) select() to
poll(); ok deraadt@ a while back
Upstream-ID: efc1937fc591bbe70ac9e9542bb984f354c8c175
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use HostKeyAlias if specified instead of hostname for
matching host certificate principal names; bz#2728; ok dtucker@
Upstream-ID: dc2e11c83ae9201bbe74872a0c895ae9725536dd
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switch sshconnect.c to modern APIs; ok djm@
Upstream-ID: 27be17f84b950d5e139b7a9b281aa487187945ad
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switch from Key typedef with struct sshkey; ok djm@
Upstream-ID: 3067d33e04efbe5131ce8f70668c47a58e5b7a1f
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remove unused variable
Upstream-ID: 66011f00819d0e71b14700449a98414033284516
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remove KEY_RSA1
ok markus@
Upstream-ID: 7408517b077c892a86b581e19f82a163069bf133
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remove compat20/compat13/compat15 variables
ok markus@
Upstream-ID: 43802c035ceb3fef6c50c400e4ecabf12354691c
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remove options.protocol and client Protocol
configuration knob
ok markus@
Upstream-ID: 5a967f5d06e2d004b0235457b6de3a9a314e9366
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unifdef WITH_SSH1 ok markus@
Upstream-ID: 9716e62a883ef8826c57f4d33b4a81a9cc7755c7
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Plug descriptor leaks of auth_sock. From jjelen at
redhat.com via bz#2687, ok djm@
Upstream-ID: 248acb99a5ed2fdca37d1aa33c0fcee7be286d88
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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
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fd leaks; report Qualys Security Advisory team; ok
deraadt@
Upstream-ID: 4ec0f12b9d8fa202293c9effa115464185aa071d
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remove roaming support; ok djm@
Upstream-ID: 2cab8f4b197bc95776fb1c8dc2859dad0c64dc56
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