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the setpcred call on AIX to immediately before the permanently_set_uid().
Ensures that we still have privileges when we call chroot and
pam_open_sesson. Based on a patch from David Leonard.
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PrintLastLog work on AIX. Based in part on a patch from Miguel Sanders.
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fits into 16 bits to work around a bug in glibc's resolver where it masks
off the buffer size at 16 bits. Patch from Hauke Lampe, ok djm jakob.
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auth2-pubkey.c session.c openbsd-compat/bsd-cygwin_util.{c,h}
openbsd-compat/daemon.c] Remove support for Windows 95/98/ME and very old
version of Cygwin. Patch from vinschen at redhat com.
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EVP_DigestUpdate does not exactly match the other OLD_EVP functions (eg
in openssl 0.9.6) so add an explicit test for it.
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EVP_DigestUpdate to the OLD_EVP compatibility functions and tell schnorr.c
to use them. Allows building with older OpenSSL versions.
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[regress/putty-kex.sh regress/putty-transfer.sh] Downgrade disabled
interop tests from FATAL error to a warning. Allows some interop
tests to proceed if others are missing necessary prerequisites.
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than O_RDWR.
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openbsd-compat/xcrypt.c] Add SECUREWARE support to OpenServer 6 SVR5 ABI.
OK djm@ dtucker@
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larger than FD_SETSIZE (OpenSSH only ever uses poll with one fd). Patch
from Nicholas Marriott.
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backported to 4.7p1:
- 4.9/4.9p1 (http://www.openssh.com/txt/release-4.9):
+ Added chroot(2) support for sshd(8), controlled by a new option
"ChrootDirectory" (closes: #139047, LP: #24777).
+ Linked sftp-server(8) into sshd(8). The internal sftp server is used
when the command "internal-sftp" is specified in a Subsystem or
ForceCommand declaration. When used with ChrootDirectory, the
internal sftp server requires no special configuration of files
inside the chroot environment.
+ Added a protocol extension method "posix-rename@openssh.com" for
sftp-server(8) to perform POSIX atomic rename() operations; sftp(1)
prefers this if available (closes: #308561).
+ Removed the fixed limit of 100 file handles in sftp-server(8).
+ ssh(8) will now skip generation of SSH protocol 1 ephemeral server
keys when in inetd mode and protocol 2 connections are negotiated.
This speeds up protocol 2 connections to inetd-mode servers that
also allow Protocol 1.
+ Accept the PermitRootLogin directive in a sshd_config(5) Match
block. Allows for, e.g. permitting root only from the local network.
+ Reworked sftp(1) argument splitting and escaping to be more
internally consistent (i.e. between sftp commands) and more
consistent with sh(1). Please note that this will change the
interpretation of some quoted strings, especially those with
embedded backslash escape sequences.
+ Support "Banner=none" in sshd_config(5) to disable sending of a
pre-login banner (e.g. in a Match block).
+ ssh(1) ProxyCommands are now executed with $SHELL rather than
/bin/sh.
+ ssh(1)'s ConnectTimeout option is now applied to both the TCP
connection and the SSH banner exchange (previously it just covered
the TCP connection). This allows callers of ssh(1) to better detect
and deal with stuck servers that accept a TCP connection but don't
progress the protocol, and also makes ConnectTimeout useful for
connections via a ProxyCommand.
+ scp(1) incorrectly reported "stalled" on slow copies (closes:
#140828).
+ scp(1) date underflow for timestamps before epoch.
+ ssh(1) used the obsolete SIG DNS RRtype for host keys in DNS,
instead of the current standard RRSIG.
+ Correctly drain ACKs when a sftp(1) upload write fails midway,
avoids a fatal() exit from what should be a recoverable condition.
+ Fixed ssh-keygen(1) selective host key hashing (i.e. "ssh-keygen -HF
hostname") to not include any IP address in the data to be hashed.
+ Make ssh(1) skip listening on the IPv6 wildcard address when a
binding address of 0.0.0.0 is used against an old SSH server that
does not support the RFC4254 syntax for wildcard bind addresses.
+ Enable IPV6_V6ONLY socket option on sshd(8) listen socket, as is
already done for X11/TCP forwarding sockets (closes: #439661).
+ Fix FD leak that could hang a ssh(1) connection multiplexing master.
+ Make ssh(1) -q option documentation consistent with reality.
+ Fixed sshd(8) PAM support not calling pam_session_close(), or
failing to call it with root privileges (closes: #372680).
+ Fix activation of OpenSSL engine support when requested in configure
(LP: #119295).
- 5.1/5.1p1 (http://www.openssh.com/txt/release-5.1):
+ Introduce experimental SSH Fingerprint ASCII Visualisation to ssh(1)
and ssh-keygen(1). Visual fingerprint display is controlled by a new
ssh_config(5) option "VisualHostKey". The intent is to render SSH
host keys in a visual form that is amenable to easy recall and
rejection of changed host keys.
+ sshd_config(5) now supports CIDR address/masklen matching in "Match
address" blocks, with a fallback to classic wildcard matching.
+ sshd(8) now supports CIDR matching in ~/.ssh/authorized_keys
from="..." restrictions, also with a fallback to classic wildcard
matching.
+ Added an extended test mode (-T) to sshd(8) to request that it write
its effective configuration to stdout and exit. Extended test mode
also supports the specification of connection parameters (username,
source address and hostname) to test the application of
sshd_config(5) Match rules.
+ ssh(1) now prints the number of bytes transferred and the overall
connection throughput for SSH protocol 2 sessions when in verbose
mode (previously these statistics were displayed for protocol 1
connections only).
+ sftp-server(8) now supports extension methods statvfs@openssh.com
and fstatvfs@openssh.com that implement statvfs(2)-like operations.
+ sftp(1) now has a "df" command to the sftp client that uses the
statvfs@openssh.com to produce a df(1)-like display of filesystem
space and inode utilisation (requires statvfs@openssh.com support on
the server).
+ Added a MaxSessions option to sshd_config(5) to allow control of the
number of multiplexed sessions supported over a single TCP
connection. This allows increasing the number of allowed sessions
above the previous default of 10, disabling connection multiplexing
(MaxSessions=1) or disallowing login/shell/subsystem sessions
entirely (MaxSessions=0).
+ Added a no-more-sessions@openssh.com global request extension that
is sent from ssh(1) to sshd(8) when the client knows that it will
never request another session (i.e. when session multiplexing is
disabled). This allows a server to disallow further session requests
and terminate the session in cases where the client has been
hijacked.
+ ssh-keygen(1) now supports the use of the -l option in combination
with -F to search for a host in ~/.ssh/known_hosts and display its
fingerprint.
+ ssh-keyscan(1) now defaults to "rsa" (protocol 2) keys, instead of
"rsa1".
+ Added an AllowAgentForwarding option to sshd_config(8) to control
whether authentication agent forwarding is permitted. Note that this
is a loose control, as a client may install their own unofficial
forwarder.
+ ssh(1) and sshd(8): avoid unnecessary malloc/copy/free when
receiving network data, resulting in a ~10% speedup.
+ ssh(1) and sshd(8) will now try additional addresses when connecting
to a port forward destination whose DNS name resolves to more than
one address. The previous behaviour was to try the only first
address and give up if that failed.
+ ssh(1) and sshd(8) now support signalling that channels are
half-closed for writing, through a channel protocol extension
notification "eow@openssh.com". This allows propagation of closed
file descriptors, so that commands such as "ssh -2 localhost od
/bin/ls | true" do not send unnecessary data over the wire.
+ sshd(8): increased the default size of ssh protocol 1 ephemeral keys
from 768 to 1024 bits.
+ When ssh(1) has been requested to fork after authentication ("ssh
-f") with ExitOnForwardFailure enabled, delay the fork until after
replies for any -R forwards have been seen. Allows for robust
detection of -R forward failure when using -f.
+ "Match group" blocks in sshd_config(5) now support negation of
groups. E.g. "Match group staff,!guests".
+ sftp(1) and sftp-server(8) now allow chmod-like operations to set
set[ug]id/sticky bits.
+ The MaxAuthTries option is now permitted in sshd_config(5) match
blocks.
+ Multiplexed ssh(1) sessions now support a subset of the ~ escapes
that are available to a primary connection.
+ ssh(1) connection multiplexing will now fall back to creating a new
connection in most error cases (closes: #352830).
+ Make ssh(1) deal more gracefully with channel requests that fail.
Previously it would optimistically assume that requests would always
succeed, which could cause hangs if they did not (e.g. when the
server runs out of file descriptors).
+ ssh(1) now reports multiplexing errors via the multiplex slave's
stderr where possible (subject to LogLevel in the mux master).
+ Prevent sshd(8) from erroneously applying public key restrictions
leaned from ~/.ssh/authorized_keys to other authentication methods
when public key authentication subsequently fails (LP: #161047).
+ Fixed an UMAC alignment problem that manifested on Itanium
platforms.
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code, replace with equivalent cygwin library call. Patch from vinschen
at redhat.comi, ok djm@.
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return EAI_FAMILY when trying to lookup unsupported address family;
from vinschen AT redhat.com
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prototype; reported by cristian.ionescu-idbohrn AT axis.com
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avoid clash with sin(3) function; reported by
cristian.ionescu-idbohrn AT axis.com
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replacement code; patch from ighighi AT gmail.com in bz#1240;
ok dtucker
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compiler warnings on some platforms. Based on a discussion with otto@
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since the new CIDR code in addmatch.c references it.
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openbsd-compat/Makefile.in openbsd-compat/openbsd-compat.h
openbsd-compat/bsd-statvfs.{c,h}] Add a null implementation of statvfs and
fstatvfs and remove #defines around statvfs code. ok djm@
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in arc4random_uniform with upper_bound in (2^30,2*31). Note that
OpenSSH did not make requests with upper bounds in this range.
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closes: #480020).
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[openbsd-compat/fmt_scaled.c openbsd-compat/openbsd-compat.h]
Fix compilation on Linux, including pulling in fmt_scaled(3)
implementation from OpenBSD's libutil.
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[configure.ac] Implement arc4random_buf(), import implementation of
arc4random_uniform() from OpenBSD
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strnvis first. Ok dtucker@
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time warnings on LynxOS. Patch from ops AT iki.fi
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chroot. Allows ChrootDirectory to work with selinux support compiled in
but not enabled. Using it with selinux enabled will require some selinux
support inside the chroot. "looks sane" djm@
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equivalent of LLONG_MAX for the compat regression tests, which makes them
run on AIX and HP-UX. Patch from David Leonard.
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implementation. It's not needed to fix bug #1081 and breaks the build
on some AIX configurations.
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configure (and there's not much point, as openssh won't work without it)
so HAVE_SELECT is not defined and the poll(2) compat code doesn't get
built in. Remove HAVE_SELECT so we can build on platforms without poll.
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getgrouplist via getgrset on AIX, rather than iterating over getgrent.
This allows, eg, Match and AllowGroups directives to work with NIS and
LDAP groups.
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compat glue into openssl-compat.h.
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openbsd-compat/openssl-compat.{c,h}] Bug #1437 Move the OpenSSL compat
header to after OpenSSL headers, since some versions of OpenSSL have
SSLeay_add_all_algorithms as a macro already.
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headers so ./configure --with-ssl-engine actually works. Patch from
Ian Lister.
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since it now conflicts with the helper function in misc.c. From
vinschen AT redhat.com.
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builtin glob implementation on Mac OS X. Based on a patch from
vgiffin at apple.
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- CVE-2007-4752: Prevent ssh(1) from using a trusted X11 cookie if
creation of an untrusted cookie fails; found and fixed by Jan Pechanec
(closes: #444738).
- sshd(8) in new installations defaults to SSH Protocol 2 only. Existing
installations are unchanged.
- The SSH channel window size has been increased, and both ssh(1)
sshd(8) now send window updates more aggressively. These improves
performance on high-BDP (Bandwidth Delay Product) networks.
- ssh(1) and sshd(8) now preserve MAC contexts between packets, which
saves 2 hash calls per packet and results in 12-16% speedup for
arcfour256/hmac-md5.
- A new MAC algorithm has been added, UMAC-64 (RFC4418) as
"umac-64@openssh.com". UMAC-64 has been measured to be approximately
20% faster than HMAC-MD5.
- Failure to establish a ssh(1) TunnelForward is now treated as a fatal
error when the ExitOnForwardFailure option is set.
- ssh(1) returns a sensible exit status if the control master goes away
without passing the full exit status.
- When using a ProxyCommand in ssh(1), set the outgoing hostname with
gethostname(2), allowing hostbased authentication to work.
- Make scp(1) skip FIFOs rather than hanging (closes: #246774).
- Encode non-printing characters in scp(1) filenames. These could cause
copies to be aborted with a "protocol error".
- Handle SIGINT in sshd(8) privilege separation child process to ensure
that wtmp and lastlog records are correctly updated.
- Report GSSAPI mechanism in errors, for libraries that support multiple
mechanisms.
- Improve documentation for ssh-add(1)'s -d option.
- Rearrange and tidy GSSAPI code, removing server-only code being linked
into the client.
- Delay execution of ssh(1)'s LocalCommand until after all forwardings
have been established.
- In scp(1), do not truncate non-regular files.
- Improve exit message from ControlMaster clients.
- Prevent sftp-server(8) from reading until it runs out of buffer space,
whereupon it would exit with a fatal error (closes: #365541).
- pam_end() was not being called if authentication failed
(closes: #405041).
- Manual page datestamps updated (closes: #433181).
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[openbsd-compat/sys-tree.h]
remove extra backslash at the end of RB_PROTOTYPE, report from
Jan.Pechanec AT Sun.COM; ok deraadt@
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GLOB_NOESCAPE is POSIX so move it out of the #ifndef _POSIX_SOURCE
block.
(NB. mostly an RCS ID sync, as portable strips out the conditionals)
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[openbsd-compat/sys-queue.h]
Enable QUEUE_MACRO_DEBUG on DIAGNOSTIC kernels.
Input and okays from krw@, millert@, otto@, deraadt@, miod@.
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[openbsd-compat/sys-queue.h]
Introduce debugging aid for queue macros. Disabled by default; but
developers are encouraged to run with this enabled.
ok krw@ fgsch@ deraadt@
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[openbsd-compat/sys-queue.h]
Some uvm problem is being exposed with the more strict macros.
Revert until we've found out what's causing the panics.
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[openbsd-compat/sys-queue.h]
Partly backout. NOLIST, used in LISTs is probably interfering.
requested by deraadt@
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[openbsd-compat/sys-queue.h]
Performing certain operations on queue.h data structurs produced
funny results. An example is calling LIST_REMOVE on the same
element twice. This will not fail, but result in a data structure
referencing who knows what. Prevent these accidents by NULLing some
fields on remove and replace. This way, either a panic or segfault
will be produced on the faulty operation.
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[openbsd-compat/sys-queue.h]
minor white spacing
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[openbsd-compat/sys-queue.h]
Remove useless ``elm'' argument from the SIMPLEQ_REMOVE_HEAD macro.
This matches our SLIST behaviour and NetBSD's SIMPLEQ as well.
ok millert krw deraadt
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[openbsd-compat/sys-tree.h]
typo
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