[channels.c channels.h clientloop.h mux.c ssh.c]
support for cancelling local and remote port forwards via the multiplex
socket. Use ssh -O cancel -L xx:xx:xx -R yy:yy:yy user@host" to request
the cancellation of the specified forwardings; ok markus@
[scp.c]
suppress adding '--' to remote commandlines when the first argument
does not start with '-'. saves breakage on some difficult-to-upgrade
embedded/router platforms; feedback & ok dtucker ok markus
[ssh_config.5 sshd_config.5]
fix typo in IPQoS parsing: there is no "AF14" class, but there is
an "AF21" class. Spotted by giesen AT snickers.org; ok markus stevesk
[glob.c]
fix GLOB_KEEPSTAT without GLOB_NOSORT; the implicit sort was being
applied only to the gl_pathv vector and not the corresponding gl_statv
array. reported in OpenSSH bz#1935; feedback and okay matthew@
[openbsd-compat/glob.c]
When the max number of items for a directory has reached GLOB_LIMIT_READDIR
an error is returned but closedir() is not called.
spotted and fix provided by Frank Denis obsd-tech@pureftpd.org
ok otto@, millert@
[moduli.5]
"Diffie-Hellman" is the usual spelling for the cryptographic protocol
first published by Whitfield Diffie and Martin Hellman in 1976.
ok jmc@
[sandbox-systrace.c]
fail open(2) with EPERM rather than SIGKILLing the whole process. libc
will call open() to do strerror() when NLS is enabled;
feedback and ok markus@
[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
[sshd.c ssh-sandbox.h sandbox.h sandbox-rlimit.c sandbox-systrace.c]
[sandbox-null.c]
rename sandbox.h => ssh-sandbox.h to make things easier for portable
[channels.c channels.h clientloop.c clientloop.h mux.c ssh.c]
hook up a channel confirm callback to warn the user then requested X11
forwarding was refused by the server; ok markus@
[servconf.c servconf.h sshd.c sshd_config.5 sandbox-rlimit.c]
[sandbox-systrace.c sandbox.h configure.ac Makefile.in]
introduce sandboxing of the pre-auth privsep child using systrace(4).
This introduces a new "UsePrivilegeSeparation=sandbox" option for
sshd_config that applies mandatory restrictions on the syscalls the
privsep child can perform. This prevents a compromised privsep child
from being used to attack other hosts (by opening sockets and proxying)
or probing local kernel attack surface.
The sandbox is implemented using systrace(4) in unsupervised "fast-path"
mode, where a list of permitted syscalls is supplied. Any syscall not
on the list results in SIGKILL being sent to the privsep child. Note
that this requires a kernel with the new SYSTR_POLICY_KILL option.
UsePrivilegeSeparation=sandbox will become the default in the future
so please start testing it now.
feedback dtucker@; ok markus@
Damien Miller
Darren Tucker
Tim Rice