Changes since OpenSSH 4.5:
============================
* sshd now allows the enabling and disabling of authentication
methods on a per user, group, host and network basis via the
Match directive in sshd_config.
* The following bugs have been fixed in this release:
- Clear SIGALRM when restarting due to SIGHUP. Prevents stray
signal from taking down sshd if a connection was pending at
the time SIGHUP was received
- sftp returned a zero exit status when upload failed due to write
errors (bugzilla #1252)
- fixed an inconsistent check for a terminal when displaying scp
progress meter (bugzilla #1265)
- Parsing of time values in Match blocks was incorrectly applied
to the global configuration (bugzilla #1275)
- Allow multiple forwarding options to work when specified in a
PermitOpen directive (bugzilla #1267)
- Interoperate with ssh.com versions that do not support binding
remote port forwarding sessions to a hostname (bugzilla #1019)
* Portable OpenSSH bugs fixed:
- "hang on exit" when background processes are running at the time
of exit on a ttyful/login session (bugzilla #52)
- Fix typos in the ssh-rand-helper(8) man page (bugzilla #1259)
- Check that some SIG records have been returned in getrrsetbyname
(bugzilla #1281)
- Fix contrib/findssl for platforms that lack "which" (bugzilla
#1237)
- Work around bug in OpenSSL 0.9.8e that broke aes256-ctr,
aes192-ctr, arcfour256 (bugzilla #1291)
This fixes the issue that, when "options edns0" is turned on (usually in
/etc/resolv.conf), ssh doesn't see it, and thus fails to request a DNSSEC
response, which in turn leads to SSHFP records being considered insecure.
Changes:
Security bugs resolved in this release:
* Fix a bug in the sshd privilege separation monitor that weakened its
verification of successful authentication. This bug is not known to
be exploitable in the absence of additional vulnerabilities.
This release includes the following non-security fixes:
* Several compilation fixes for portable OpenSSH
* Fixes to Solaris SMF/process contract support (bugzilla #1255)
- A few pkglint warning clean up.
- Major changes are here. For complete changes,
see http://www.openssh.com/txt/release-4.4.
Changes since OpenSSH 4.3:
============================
Security bugs resolved in this release:
* Fix a pre-authentication denial of service found by Tavis Ormandy,
that would cause sshd(8) to spin until the login grace time
expired.
* Fix an unsafe signal hander reported by Mark Dowd. The signal
handler was vulnerable to a race condition that could be exploited
to perform a pre-authentication denial of service. On portable
OpenSSH, this vulnerability could theoretically lead to
pre-authentication remote code execution if GSSAPI authentication
is enabled, but the likelihood of successful exploitation appears
remote.
* On portable OpenSSH, fix a GSSAPI authentication abort that could
be used to determine the validity of usernames on some platforms.
This release includes the following new functionality and fixes:
* Implemented conditional configuration in sshd_config(5) using the
"Match" directive. This allows some configuration options to be
selectively overridden if specific criteria (based on user, group,
hostname and/or address) are met. So far a useful subset of post-
authentication options are supported and more are expected to be
added in future releases.
* Add support for Diffie-Hellman group exchange key agreement with a
final hash of SHA256.
* Added a "ForceCommand" directive to sshd_config(5). Similar to the
command="..." option accepted in ~/.ssh/authorized_keys, this forces
the execution of the specified command regardless of what the user
requested. This is very useful in conjunction with the new "Match"
option.
* Add a "PermitOpen" directive to sshd_config(5). This mirrors the
permitopen="..." authorized_keys option, allowing fine-grained
control over the port-forwardings that a user is allowed to
establish.
* Add optional logging of transactions to sftp-server(8).
* ssh(1) will now record port numbers for hosts stored in
~/.ssh/authorized_keys when a non-standard port has been requested.
* Add an "ExitOnForwardFailure" option to cause ssh(1) to exit (with
a non-zero exit code) when requested port forwardings could not be
established.
* Extend sshd_config(5) "SubSystem" declarations to allow the
specification of command-line arguments.
* Replacement of all integer overflow susceptible invocations of
malloc(3) and realloc(3) with overflow-checking equivalents.
* Many manpage fixes and improvements
* New portable OpenSSH-specific features:
- Add optional support for SELinux, controlled using the
--with-selinux configure option (experimental)
- Add optional support for Solaris process contracts, enabled
using the --with-solaris-contracts configure option (experimental)
This option will also include SMF metadata in Solaris packages
built using the "make package" target
- Add optional support for OpenSSL hardware accelerators (engines),
enabled using the --with-ssl-engine configure option.
at previous commit.
Note: OpenSSH 4.4p1 has already released, there is no hpn-patch patch yet,
so I don't update to it while pkgsrc-freeze is in effect.
20060211
- (dtucker) [README] Bump release notes URL.
- (djm) Release 4.3p2
20060208
- (tim) [session.c] Logout records were not updated on systems with
post auth privsep disabled due to bug 1086 changes. Analysis and patch
by vinschen at redhat.com. OK tim@, dtucker@.
- (dtucker) [configure.ac] Typo in Ultrix and NewsOS sections (NEED_SETPRGP
-> NEED_SETPGRP), reported by Berhard Simon. ok tim@
20060206
- (tim) [configure.ac] Remove unnecessary tests for net/if.h and
netinet/in_systm.h. OK dtucker@.
20060205
- (tim) [configure.ac] Add AC_REVISION. Add sys/time.h to lastlog.h test
for Solaris. OK dtucker@.
- (tim) [configure.ac] Bug #1149. Changes in QNX section only. Patch by
kraai at ftbfs.org.
20060203
- (tim) [configure.ac] test for egrep (AC_PROG_EGREP) before first
AC_CHECK_HEADERS test. Without it, if AC_CHECK_HEADERS is first run
by a platform specific check, builtin standard includes tests will be
skipped on the other platforms.
Analysis and suggestion by vinschen at redhat.com, patch by dtucker@.
OK tim@, djm@.
20060202
- (dtucker) [configure.ac] Bug #1148: Fix "crippled AES" test so that it
works with picky compilers. Patch from alex.kiernan at thus.net.
INSTALL/DEINSTALL script creation within pkgsrc.
If an INSTALL or DEINSTALL script is found in the package directory,
it is automatically used as a template for the pkginstall-generated
scripts. If instead, they should be used simply as the full scripts,
then the package Makefile should set INSTALL_SRC or DEINSTALL_SRC
explicitly, e.g.:
INSTALL_SRC= ${PKGDIR}/INSTALL
DEINSTALL_SRC= # emtpy
As part of the restructuring of the pkginstall framework internals,
we now *always* generate temporary INSTALL or DEINSTALL scripts. By
comparing these temporary scripts with minimal INSTALL/DEINSTALL
scripts formed from only the base templates, we determine whether or
not the INSTALL/DEINSTALL scripts are actually needed by the package
(see the generate-install-scripts target in bsd.pkginstall.mk).
In addition, more variables in the framework have been made private.
The *_EXTRA_TMPL variables have been renamed to *_TEMPLATE, which are
more sensible names given the very few exported variables in this
framework. The only public variables relating to the templates are:
INSTALL_SRC INSTALL_TEMPLATE
DEINSTALL_SRC DEINSTALL_TEMPLATE
HEADER_TEMPLATE
The packages in pkgsrc have been modified to reflect the changes in
the pkginstall framework.
developer is officially maintaining the package.
The rationale for changing this from "tech-pkg" to "pkgsrc-users" is
that it implies that any user can try to maintain the package (by
submitting patches to the mailing list). Since the folks most likely
to care about the package are the folks that want to use it or are
already using it, this would leverage the energy of users who aren't
developers.
From Jason White via PR pkg/32780
Changes:
Security bugs resolved in this release:
* CVE-2006-0225: scp (as does rcp, on which it is based) invoked a
subshell to perform local to local, and remote to remote copy
operations. This subshell exposed filenames to shell expansion
twice; allowing a local attacker to create filenames containing
shell metacharacters that, if matched by a wildcard, could lead
to execution of attacker-specified commands with the privilege of
the user running scp (Bugzilla #1094)
This is primarily a bug-fix release, only one new feature has been
added:
* Add support for tunneling arbitrary network packets over a
connection between an OpenSSH client and server via tun(4) virtual
network interfaces. This allows the use of OpenSSH (4.3+) to create
a true VPN between the client and server providing real network
connectivity at layer 2 or 3. This feature is experimental and is
currently supported on OpenBSD, Linux, NetBSD (IPv4 only) and
FreeBSD. Other operating systems with tun/tap interface capability
may be added in future portable OpenSSH releases. Please refer to
the README.tun file in the source distribution for further details
and usage examples.
Some of the other bugs resolved and internal improvements are:
* Reduce default key length for new DSA keys generated by ssh-keygen
back to 1024 bits. DSA is not specified for longer lengths and does
not fully benefit from simply making keys longer. As per FIPS 186-2
Change Notice 1, ssh-keygen will refuse to generate a new DSA key
smaller or larger than 1024 bits
* Fixed X forwarding failing to start when a the X11 client is executed
in background at the time of session exit (Bugzilla #1086)
* Change ssh-keygen to generate a protocol 2 RSA key when invoked
without arguments (Bugzilla #1064)
* Fix timing variance for valid vs. invalid accounts when attempting
Kerberos authentication (Bugzilla #975)
* Ensure that ssh always returns code 255 on internal error (Bugzilla
#1137)
* Cleanup wtmp files on SIGTERM when not using privsep (Bugzilla #1029)
* Set SO_REUSEADDR on X11 listeners to avoid problems caused by
lingering sockets from previous session (X11 applications can
sometimes not connect to 127.0.0.1:60xx) (Bugzilla #1076)
* Ensure that fds 0, 1 and 2 are always attached in all programs, by
duping /dev/null to them if necessary.
* Xauth list invocation had bogus "." argument (Bugzilla #1082)
* Remove internal assumptions on key exchange hash algorithm and output
length, preparing OpenSSH for KEX methods with alternate hashes.
* Ignore junk sent by a server before it sends the "SSH-" banner
(Bugzilla #1067)
* The manpages has been significantly improves and rearranged, in
addition to other specific manpage fixes:
#1037 - Man page entries for -L and -R should mention -g.
#1077 - Descriptions for "ssh -D" and DynamicForward should mention
they can specify "bind_address" optionally.
#1088 - Incorrect descriptions in ssh_config man page for
ControlMaster=no.
#1121 - Several corrections for ssh_agent manpages
* Lots of cleanups, including fixes to memory leaks on error paths
(Bugzilla #1109, #1110, #1111 and more) and possible crashes (#1092)
* Portable OpenSSH-specific fixes:
- Pass random seed during re-exec for each connection: speeds up
processing of new connections on platforms using the OpenSSH's
builtin entropy collector (ssh-rand-helper)
- PAM fixes and improvements:
#1045 - Missing option for ignoring the /etc/nologin file
#1087 - Show PAM password expiry message from LDAP on login
#1028 - Forward final non-query conversations to client
#1126 - Prevent user from being forced to change an expired
password repeatedly on AIX in some PAM configurations.
#1045 - Do not check /etc/nologin when PAM is enabled, instead
allow PAM to handle it. Note that on platforms using
PAM, the pam_nologin module should be used in sshd's
session stack in order to maintain past behaviour
- Portability-related fixes:
#989 - Fix multiplexing regress test on Solaris
#1097 - Cross-compile fixes.
#1096 - ssh-keygen broken on HPUX.
#1098 - $MAIL being set incorrectly for HPUX server login.
#1104 - Compile error on Tru64 Unix 4.0f
#1106 - Updated .spec file and startup for SuSE.
#1122 - Use _GNU_SOURCE define in favor of __USE_GNU, fixing
compilation problems on glibc 2.4
Some changes different from patches provided in that PR are:
- patch-aj, patch-aq, and patch-as not changed (they appeared to
be identical to previous patches)
- DragonFly support also added to configure script (patch-aa)
because compilation failed due to missing crypt
- and install-sysconf target removed from the installation target
in Makefile.in (patch-ah). Just let the pkgsrc framework install
this since it now will allow it to be removed correctly on
deinstall.
- use "pam" instead of "PAM" as option name in the post-install
target.
This removes patch-ai.
This also now uses openssh-4.2p1-hpn11.diff patch.
I didn't test with kerberos and hpn-patch options. I did test with
PAM on Linux. (The PR reported that kerberos and hpn-patch options
were tested for compiling.) I tested on NetBSD 2.0.2, Linux,
and DragonFly.
This includes two security fixes and several bug fixes and many
improvemens. The changes are listed at
http://www.mindrot.org/pipermail/openssh-unix-announce/2005-September/000083.htmlhttp://www.mindrot.org/pipermail/openssh-unix-announce/2005-May/000079.html
TODO: get some of these patches committed upstream.
backslashes anymore. A single backslash is enough. Changed the
definition in all affected packages. For those that are not caught, an
additional check is placed into bsd.pkginstall.mk.
as the INSTALL and DEINSTALL scripts no longer distinguish between
the two types of files. Drop SUPPORT_FILES{,_PERMS} and modify the
packages in pkgsrc accordingly.
and /etc/sshd.conf is old (and I assume some configurations from
there don't apply any more), user and group are not created
automatically (only if PKG_CREATE_USERGROUP is at default YES),
UsePrivilegeSeparation is the default, and seems to imply that
openssh is insecure without it.
Bump PKGREVISION.
Change comment regarding MESSAGE.Interix.
Removed unused MESSAGE_SUBST settings. Move one to the options.mk
as it is for "pam" only.
around at either build-time or at run-time is:
USE_TOOLS+= perl # build-time
USE_TOOLS+= perl:run # run-time
Also remove some places where perl5/buildlink3.mk was being included
by a package Makefile, but all that the package wanted was the Perl
executable.
and extra pam file was not included in +CONTENTS.
So moved the include of options.mk to after the PLIST_SRC and
MESSAGE_SRC are defined as empty.
(MESSAGE_SRC is redefined if Interix and if PAM PKG_OPTION was enabled
then this still needs to be fixed.)
And always is defined as share/examples/rc.d
which was the default before.
This rc.d scripts are not automatically added to PLISTs now also.
So add to each corresponding PLIST as required.
This was discussed on tech-pkg in late January and late April.
Todo: remove the RCD_SCRIPTS_EXAMPLEDIR uses in MESSAGES and elsewhere
and remove the RCD_SCRIPTS_EXAMPLEDIR itself.
*before* a BSD-with-advertising license was added to their diffs, and other
work done personally by me.
sshd now works. Most permissions checks work properly. Privsep is off by
default, and the sshd user is not created, on Interix until some problems
with privsep are fixed (perhaps by abstracting the auth functionality out
to openpam).
