This attempts to hide inter-keystroke timings by sending interactive
traffic at fixed intervals (default: every 20ms) when there is only a
small amount of data being sent. It also sends fake "chaff" keystrokes
for a random interval after the last real keystroke. These are
controlled by a new ssh_config ObscureKeystrokeTiming keyword/
feedback/ok markus@
OpenBSD-Commit-ID: 02231ddd4f442212820976068c34a36e3c1b15be
This adds a pair of SSH transport protocol messages SSH2_MSG_PING/PONG
to implement a ping capability. These messages use numbers in the "local
extensions" number space and are advertised using a "ping@openssh.com"
ext-info message with a string version number of "0".
ok markus@
OpenBSD-Commit-ID: b6b3c4cb2084c62f85a8dc67cf74954015eb547f
verbose instead of error to reduce preauth log spam. All of those get logged
with a more generic error message by sshpkt_fatal().
feedback from sthen@
ok djm@
OpenBSD-Commit-ID: bd47dab4695b134a44c379f0e9a39eed33047809
multiplexed sessions to ignore SIGINT under some circumstances. Reported by /
feedback naddy@, ok dtucker@
OpenBSD-Commit-ID: 4d5c6c894664f50149153fd4764f21f43e7d7e5a
connections. If the multiplex socket exists but the connection times out,
ssh will fall back to a direct connection the same way it would if the socket
did not exist at all. ok djm@
OpenBSD-Commit-ID: 2fbe1a36d4a24b98531b2d298a6557c8285dc1b4
When sshd is built with an OpenSSL that does not self-seed, it would
fail in the preauth privsep process while handling a new connection.
Sanity checked by djm@
a specific point. e.g. "make LTESTS_FROM=t-sftp" will only run the sftp.sh
test and subsequent ones. ok dtucker@
OpenBSD-Regress-ID: 07f653de731def074b29293db946042706fcead3
AuthorizedKeysCommand accept the %D (routing domain) and a new %C (connection
address/port 4-tuple) as expansion sequences; ok markus
OpenBSD-Commit-ID: ee9a48bf1a74c4ace71b69de69cfdaa2a7388565
Previously sk-dummy.so used libc's (or compat's) SHA256 since it may be
built without OpenSSL. In many cases, however, including both libc's
and OpenSSL's headers together caused conflicting definitions.
We tried working around this (on OpenSSL <1.1 you could define
OPENSSL_NO_SHA, NetBSD had USE_LIBC_SHA2, various #define hacks) with
varying levels of success. Since OpenSSL >=1.1 removed OPENSSL_NO_SHA
and including most OpenSSL headers would bring sha.h in, even if it
wasn't used directly this was a constant hassle.
Admit defeat and use OpenSSL's SHA256 unless we aren't using OpenSSL at
all. ok djm@
multiplexed cases (inc. ControlPersist). bz3589 bz3589 Based on patches by
Peter Chubb; ok dtucker@
OpenBSD-Commit-ID: a7a2976a54b93e6767dc846b85647e6ec26969ac
Make ssh-pkcs11-client start an independent helper for each provider,
providing better isolation between modules and reliability if a single
module misbehaves.
This also implements reference counting of PKCS#11-hosted keys,
allowing ssh-pkcs11-helper subprocesses to be automatically reaped
when no remaining keys reference them. This fixes some bugs we have
that make PKCS11 keys unusable after they have been deleted, e.g.
https://bugzilla.mindrot.org/show_bug.cgi?id=3125
ok markus@
OpenBSD-Commit-ID: 0ce188b14fe271ab0568f4500070d96c5657244e
This checks via nlist(3) that candidate provider libraries contain one
of the symbols that we will require prior to dlopen(), which can cause
a number of side effects, including execution of constructors.
Feedback deraadt; ok markus
OpenBSD-Commit-ID: 1508a5fbd74e329e69a55b56c453c292029aefbe
libraries to ssh-agent by default.
The old behaviour of allowing remote clients from loading providers
can be restored using `ssh-agent -O allow-remote-pkcs11`.
Detection of local/remote clients requires a ssh(1) that supports
the `session-bind@openssh.com` extension. Forwarding access to a
ssh-agent socket using non-OpenSSH tools may circumvent this control.
ok markus@
OpenBSD-Commit-ID: 4c2bdf79b214ae7e60cc8c39a45501344fa7bd7c
jmc@openbsd.org
djm@openbsd.org
tobhe@openbsd.org
Darren Tucker
naddy@openbsd.org
Damien Miller
dtucker@openbsd.org