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This patch was part of the 6.6p1 release.
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Tell systemd just to kill the sshd process when the ssh connection drops
instead of the entire cgroup for sshd, so that any screen sessions (and
more to the point, processes within them) do not get killed.
(This is what the Fedora sshd service file does, and what we're already
doing in the dropbear service file).
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
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Stopping sshd must only kill the listening (top-level) daemon; it must
not stop any other sshd process, because those are forked ssh
connections which may include e.g. the connection that called
/etc/init.d/sshd stop.
This initscript uses "start-stop-daemon -x <exe>" for starting/stopping.
When that is provided by busybox, this behavior is broken:
`/etc/init.d/sshd stop` stops *all* sshd processes. This was caused by a
fix to busybox 1.20: 17eedcad9406c43beddab3906c8c693626c351fb
"ssd: compat: match -x EXECUTABLE by /proc/pid/exe too".
The fix is to use a pidfile. All initscripts in upstream openssh do this,
as does dropbear.
Acked-by: Gratian Crisan <gratian.crisan@ni.com>
Acked-by: Ken Sharp <ken.sharp@ni.com>
Signed-off-by: Richard Tollerton <rich.tollerton@ni.com>
Signed-off-by: Ben Shelton <ben.shelton@ni.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Previously, even if PAM is enabled for ssh, the daemon still tries to
authenticate an empty password. This leads to authentication failure
which would mess up with PAM modules.
As a result, if 'UsePAM', 'PermitEmptyPasswords' and 'PasswordAuthentication'
are enabled, no user can login correctly. We would meet the following error
message at the client side.
Write failed: Broken Pipe
This patch fixes the above problem by checking whether PAM is enabled before
authenticating an empty password. After all, if PAM is enabled, the task of
authenticating passwords should be handled to PAM modules.
[YOCTO #6466]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The verify_host_key function in sshconnect.c in the client in OpenSSH 6.6 and
earlier allows remote servers to trigger the skipping of SSHFP DNS RR checking
by presenting an unacceptable HostCertificate.
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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sshd in OpenSSH before 6.6 does not properly support wildcards on
AcceptEnv lines in sshd_config, which allows remote attackers to
bypass intended environment restrictions by using a substring located
before a wildcard character.
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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The /var/log/messages reports /var/log/lastlog as missing, since openssh
needs this file, create it as a volatile.
[YOCTO #6172]
Signed-off-by: Saul Wold <sgw@linux.intel.com>
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Install openssh test-suite and run it as ptest.
Signed-off-by: Maxin B. John <maxin.john@enea.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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[YOCTO #5983]
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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Paul Eggleton
Richard Tollerton
Chen Qi
Saul Wold
Maxin B. John