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Support for TCP wrappers was dropped in OpenSSH 6.7. See this message
and thread:
https://lists.mindrot.org/pipermail/openssh-unix-dev/2014-April/032497.html
It is true that this reduces preauth attack surface in sshd. On the
other hand, this support seems to be quite widely used, and abruptly
dropping it (from the perspective of users who don't read
openssh-unix-dev) could easily cause more serious problems in practice.
It's not entirely clear what the right long-term answer for Debian is,
but it at least probably doesn't involve dropping this feature shortly
before a freeze.
Forwarded: not-needed
Last-Update: 2014-10-07
Patch-Name: restore-tcp-wrappers.patch
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This patch has been rejected upstream: "None of the OpenSSH developers are
in favour of adding this, and this situation has not changed for several
years. This is not a slight on Simon's patch, which is of fine quality, but
just that a) we don't trust GSSAPI implementations that much and b) we don't
like adding new KEX since they are pre-auth attack surface. This one is
particularly scary, since it requires hooks out to typically root-owned
system resources."
However, quite a lot of people rely on this in Debian, and it's better to
have it merged into the main openssh package rather than having separate
-krb5 packages (as we used to have). It seems to have a generally good
security history.
Bug: https://bugzilla.mindrot.org/show_bug.cgi?id=1242
Last-Updated: 2016-01-04
Patch-Name: gssapi.patch
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sshd was failing with:
ssh_sandbox_child: sandbox_init: dlopen(/usr/lib/libsandbox.1.dylib, 261):cw
image not found [preauth]
caused by chroot before sandboxing. Avoid by explicitly linking libsandbox
to sshd. Spotted by Darren.
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Not all systems with Solaris privs have priv_basicset so factor that
out and provide backward compatibility code. Similarly, not all have
PRIV_NET_ACCESS so wrap that in #ifdef. Based on code from
alex at cooperi.net and djm@ with help from carson at taltos.org and
wieland at purdue.edu.
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Should fix build problem on Solaris 2.6 reported by Tom G. Christensen.
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Includes a pre-auth privsep sandbox and several pledge()
emulations. bz#2511, patch by Alex Wilson.
ok dtucker@
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Patch from Mike Frysinger via github.
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Patch from doughdemon via github.
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Fixes builds on almost everything.
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Noted by Austin English.
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Change all tame callers to namechange to pledge(2).
Upstream-ID: 17e654fc27ceaf523c60f4ffd9ec7ae4e7efc7f2
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OpenBSD only for now
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bz#2457, from konto-mindrot.org at walimnieto.com.
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bz#2259, from sconeu at yahoo.com.
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On some platforms the native realpath doesn't work with non-existent
files (this is actually specified in some versions of POSIX), however
the sftp spec says its realpath with "canonicalize any given path name".
On those platforms, use realpath from the compat library.
In addition, when compiling with -DFORTIFY_SOURCE, glibc redefines
the realpath symbol to the checked version, so redefine ours to
something else so we pick up the compat version we want.
bz#2428, ok djm@
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Compile-time disable SSH v.1 again
Upstream-ID: 1d4b513a3a06232f02650b73bad25100d1b800af
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Also resort and tidy syscall list. Based on patches by Jakub Jelen
bz#2361; ok dtucker@
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This changes configure.ac to look for '${host}-ar' as set by
AC_CANONICAL_HOST before looking for the unprefixed 'ar'.
Useful when cross-compiling when all your binutils are prefixed.
Patch from moben at exherbo org via astrand at lysator liu se and
bz#2352.
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Compile-time disable SSH protocol 1. You can turn it
back on using the Makefile.inc knob if you need it to talk to ancient
devices.
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fixes builds on systems that use DES_crypt; based on patch
from Roumen Petrov
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Some platforms (older FreeBSD and DragonFly versions) do have
getaddrinfo() but do not have AI_NUMERICINFO. so define it to zero
in those cases.
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Disables and removes dependency on OpenSSL. Many features don't
work and the set of crypto options is greatly restricted. This
will only work on system with native arc4random or /dev/urandom.
Considered highly experimental for now.
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Allows disabling support for SSH protocol 1.
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using memset_s() where possible; improve fallback to indirect bzero
via a volatile pointer to give it more of a chance to avoid being
optimised away.
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just for systems that lack asprintf); check for it always and extend
test to catch more brokenness. Fixes builds on Solaris <= 9
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number; fixes test for unsupported versions
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suggested by Kevin Brott
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has been located; fixes builds agains libressl-portable
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doesn't support it.
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been removed from sshd.c.
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[openbsd-compat/bsd-cygwin_util.h] On Cygwin, determine privilege
separation user at runtime, since it may need to be a domain account.
Patch from Corinna Vinschen.
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vhangup on Linux. It doens't work for non-root users, and for them
it just messes up the tty settings.
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[sshbuf-getput-crypto.c sshbuf.c] compilation and portability fixes
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portability glue to support building without libcrypto
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- (tim) [configure.ac] Fix cut-and-paste error. Patch from Bryan Drewery.
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code for older OpenSSL versions that don't have EVP_MD_CTX_copy_ex.
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[auth2-chall.c authfd.c authfile.c bufaux.c bufec.c canohost.c]
[channels.c cipher-chachapoly.c clientloop.c configure.ac hostfile.c]
[kexc25519.c krl.c monitor.c sandbox-systrace.c session.c]
[sftp-client.c ssh-keygen.c ssh.c sshconnect2.c sshd.c sshlogin.c]
[openbsd-compat/explicit_bzero.c openbsd-compat/openbsd-compat.h]
replace most bzero with explicit_bzero, except a few that cna be memset
ok djm dtucker
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different symbols for 'read' when various compiler flags are
in use, causing atomicio.c comparisons against it to break and
read/write operations to hang; ok dtucker
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in headers that actually exist. patch from Tom G. Christensen;
ok dtucker@
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Tom G. Christensen
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ok dtucker
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