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2017-10-04Handle SELinux authorisation rolesManoj Srivastava
Rejected upstream due to discomfort with magic usernames; a better approach will need an SSH protocol change. In the meantime, this came from Debian's SELinux maintainer, so we'll keep it until we have something better. Bug: https://bugzilla.mindrot.org/show_bug.cgi?id=1641 Bug-Debian: http://bugs.debian.org/394795 Last-Update: 2017-10-04 Patch-Name: selinux-role.patch
2017-10-04Restore TCP wrappers supportColin Watson
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
2017-10-04GSSAPI key exchange supportSimon Wilkinson
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: 2017-10-04 Patch-Name: gssapi.patch
2017-10-04Import openssh_7.6p1.orig.tar.gzColin Watson
2017-10-03upstream commitdjm@openbsd.org
Fix PermitOpen crash; spotted by benno@, ok dtucker@ deraadt@ Upstream-ID: c2cc84ffac070d2e1ff76182c70ca230a387983c
2017-10-01update URL againDamien Miller
I spotted a typo in the draft so uploaded a new version...
2017-10-01sync release notes URLDamien Miller
2017-10-01sync contrib/ssh-copy-id with upstreamDamien Miller
2017-10-01update version in RPM spec filesDamien Miller
2017-10-01update agent draft URLDamien Miller
2017-10-01upstream commitdjm@openbsd.org
openssh-7.6; ok deraadt@ Upstream-ID: a39c3a5b63a1baae109ae1ae4c7c34c2a59acde0
2017-10-01upstream commitjmc@openbsd.org
tweak EposeAuthinfo; diff from lars nooden tweaked by sthen; ok djm dtucker Upstream-ID: 8f2ea5d2065184363e8be7a0ba24d98a3b259748
2017-09-28don't fatal ./configure for LibreSSLDamien Miller
2017-09-28abort in configure when only openssl-1.1.x foundDamien Miller
We don't support openssl-1.1.x yet (see multiple threads on the openssh-unix-dev@ mailing list for the reason), but previously ./configure would accept it and the compilation would subsequently fail. This makes ./configure display an explicit error message and abort. ok dtucker@
2017-09-27Check for and handle calloc(p, 0) = NULL.Darren Tucker
On some platforms (AIX, maybe others) allocating zero bytes of memory via the various *alloc functions returns NULL, which is permitted by the standards. Autoconf has some macros for detecting this (with the exception of calloc for some reason) so use these and if necessary activate shims for them. ok djm@
2017-09-26upstream commitmarkus@openbsd.org
test reverse dynamic forwarding with SOCKS Upstream-Regress-ID: 95cf290470f7e5e2f691e4bc6ba19b91eced2f79
2017-09-26sync missing changes in dynamic-forward.shDamien Miller
2017-09-25Add minimal strsignal for platforms without it.Darren Tucker
2017-09-24upstream commitdjm@openbsd.org
fix inverted test on channel open failure path that "upgraded" a transient failure into a fatal error; reported by sthen and also seen by benno@; ok sthen@ Upstream-ID: b58b3fbb79ba224599c6cd6b60c934fc46c68472
2017-09-24upstream commitdjm@openbsd.org
write the correct buffer when tunnel forwarding; doesn't matter on OpenBSD (they are the same) but does matter on portable where we use an output filter to translate os-specific tun/tap headers Upstream-ID: f1ca94eff48404827b12e1d12f6139ee99a72284
2017-09-24upstream commitdjm@openbsd.org
fix tunnel forwarding problem introduced in refactor; reported by stsp@ ok markus@ Upstream-ID: 81a731cdae1122c8522134095d1a8b60fa9dcd04
2017-09-22upstream commitmarkus@openbsd.org
Add 'reverse' dynamic forwarding which combines dynamic forwarding (-D) with remote forwarding (-R) where the remote-forwarded port expects SOCKS-requests. The SSH server code is unchanged and the parsing happens at the SSH clients side. Thus the full SOCKS-request is sent over the forwarded channel and the client parses c->output. Parsing happens in channel_before_prepare_select(), _before_ the select bitmask is computed in the pre[] handlers, but after network input processing in the post[] handlers. help and ok djm@ Upstream-ID: aa25a6a3851064f34fe719e0bf15656ad5a64b89
2017-09-22upstream commitdtucker@openbsd.org
Use strsignal in debug message instead of casting for the benefit of portable where sig_atomic_t might not be int. "much nicer" deraadt@ Upstream-ID: 2dac6c1e40511c700bd90664cd263ed2299dcf79
2017-09-22upstream commitmillert@openbsd.org
Use explicit_bzero() instead of bzero() before free() to prevent the compiler from optimizing away the bzero() call. OK djm@ Upstream-ID: cdc6197e64c9684c7250e23d60863ee1b53cef1d
2017-09-19upstream commitdjm@openbsd.org
fix use-after-free in ~^Z escape handler path, introduced in channels.c refactor; spotted by millert@ "makes sense" deraadt@ Upstream-ID: 8fa2cdc65c23ad6420c1e59444b0c955b0589b22
2017-09-19upstream commitdtucker@openbsd.org
Prevent type mismatch warning in debug on platforms where sig_atomic_t != int. ok djm@ Upstream-ID: 306e2375eb0364a4c68e48f091739bea4f4892ed
2017-09-19upstream commitdtucker@openbsd.org
Add braces missing after channels refactor. ok markus@ Upstream-ID: 72ab325c84e010680dbc88f226e2aa96b11a3980
2017-09-19add freezero(3) replacementDamien Miller
ok dtucker@
2017-09-19move FORTIFY_SOURCE into hardening options groupDamien Miller
It's still on by default, but now it's possible to turn it off using --without-hardening. This is useful since it's known to cause problems with some -fsanitize options. ok dtucker@
2017-09-18upstream commitbluhm@openbsd.org
Print SKIPPED if sudo and doas configuration is missing. Prevents that running the regression test with wrong environment is reported as failure. Keep the fatal there to avoid interfering with other setups for portable ssh. OK dtucker@ Upstream-Regress-ID: f0dc60023caef496ded341ac5aade2a606fa234e
2017-09-18upstream commitdtucker@openbsd.org
Remove obsolete privsep=no fallback test. Upstream-Regress-ID: 7d6e1baa1678ac6be50c2a1555662eb1047638df
2017-09-18upstream commitdtucker@openbsd.org
Remove non-privsep test since disabling privsep is now deprecated. Upstream-Regress-ID: 77ad3f3d8d52e87f514a80f285c6c1229b108ce8
2017-09-18upstream commitdtucker@openbsd.org
Don't call fatal from stop_sshd since it calls cleanup which calls stop_sshd which will probably fail in the same way. Instead, just bail. Differentiate between sshd dying without cleanup and not shutting down. Upstream-Regress-ID: f97315f538618b349e2b0bea02d6b0c9196c6bc4
2017-09-14upstream commitdjm@openbsd.org
Revert commitid: gJtIN6rRTS3CHy9b. ------------- identify the case where SSHFP records are missing but other DNS RR types are present and display a more useful error message for this case; patch by Thordur Bjornsson; bz#2501; ok dtucker@ ------------- This caused unexpected failures when VerifyHostKeyDNS=yes, SSHFP results are missing but the user already has the key in known_hosts Spotted by dtucker@ Upstream-ID: 97e31742fddaf72046f6ffef091ec0d823299920
2017-09-12adapt portable to channels API changesDamien Miller
2017-09-12upstream commitdjm@openbsd.org
unused variable Upstream-ID: 2f9ba09f2708993d35eac5aa71df910dcc52bac1
2017-09-12upstream commitdjm@openbsd.org
fix tun/tap forwarding case in previous Upstream-ID: 43ebe37a930320e24bca6900dccc39857840bc53
2017-09-12upstream commitdjm@openbsd.org
Make remote channel ID a u_int Previously we tracked the remote channel IDs in an int, but this is strictly incorrect: the wire protocol uses uint32 and there is nothing in-principle stopping a SSH implementation from sending, say, 0xffff0000. In practice everyone numbers their channels sequentially, so this has never been a problem. ok markus@ Upstream-ID: b9f4cd3dc53155b4a5c995c0adba7da760d03e73
2017-09-12upstream commitdjm@openbsd.org
refactor channels.c Move static state to a "struct ssh_channels" that is allocated at runtime and tracked as a member of struct ssh. Explicitly pass "struct ssh" to all channels functions. Replace use of the legacy packet APIs in channels.c. Rework sshd_config PermitOpen handling: previously the configuration parser would call directly into the channels layer. After the refactor this is not possible, as the channels structures are allocated at connection time and aren't available when the configuration is parsed. The server config parser now tracks PermitOpen itself and explicitly configures the channels code later. ok markus@ Upstream-ID: 11828f161656b965cc306576422613614bea2d8f
2017-09-12upstream commitdjm@openbsd.org
typo in comment Upstream-ID: a93b1e6f30f1f9b854b5b964b9fd092d0c422c47
2017-09-12upstream commitjmc@openbsd.org
tweak previous; Upstream-ID: bb8cc40b61b15f6a13d81da465ac5bfc65cbfc4b
2017-09-08Fuzzer harnesses for sig verify and pubkey parsingDamien Miller
These are some basic clang libfuzzer harnesses for signature verification and public key parsing. Some assembly (metaphorical) required.
2017-09-08Give configure ability to set CFLAGS/LDFLAGS laterDamien Miller
Some CFLAGS/LDFLAGS may disrupt the configure script's operation, in particular santization and fuzzer options that break assumptions about memory and file descriptor dispositions. This adds two flags to configure --with-cflags-after and --with-ldflags-after that allow specifying additional compiler and linker options that are added to the resultant Makefiles but not used in the configure run itself. E.g. env CC=clang-3.9 ./configure \ --with-cflags-after=-fsantize=address \ --with-ldflags-after="-g -fsanitize=address"
2017-09-04upstream commitdjm@openbsd.org
Expand ssh_config's StrictModes option with two new settings: StrictModes=accept-new will automatically accept hitherto-unseen keys but will refuse connections for changed or invalid hostkeys. StrictModes=off is the same as StrictModes=no Motivation: StrictModes=no combines two behaviours for host key processing: automatically learning new hostkeys and continuing to connect to hosts with invalid/changed hostkeys. The latter behaviour is quite dangerous since it removes most of the protections the SSH protocol is supposed to provide. Quite a few users want to automatically learn hostkeys however, so this makes that feature available with less danger. At some point in the future, StrictModes=no will change to be a synonym for accept-new, with its current behaviour remaining available via StrictModes=off. bz#2400, suggested by Michael Samuel; ok markus Upstream-ID: 0f55502bf75fc93a74fb9853264a8276b9680b64
2017-09-04upstream commitjmc@openbsd.org
remove blank line; Upstream-ID: 2f46b51a0ddb3730020791719e94d3e418e9f423
2017-09-04upstream commitdjm@openbsd.org
identify the case where SSHFP records are missing but other DNS RR types are present and display a more useful error message for this case; patch by Thordur Bjornsson; bz#2501; ok dtucker@ Upstream-ID: 8f7a5a8344f684823d8317a9708b63e75be2c244
2017-09-04upstream commitdjm@openbsd.org
document available AuthenticationMethods; bz#2453 ok dtucker@ Upstream-ID: 2c70576f237bb699aff59889dbf2acba4276d3d0
2017-09-04upstream commitdjm@openbsd.org
pass packet state down to some of the channels function (more to come...); ok markus@ Upstream-ID: d8ce7a94f4059d7ac1e01fb0eb01de0c4b36c81b
2017-09-04upstream commitjmc@openbsd.org
sort options; Upstream-ID: cf21d68cf54e81968bca629aaeddc87f0c684f3c
2017-09-04upstream commitdlg@openbsd.org
add a -q option to ssh-add to make it quiet on success. if you want to silence ssh-add without this you generally redirect the output to /dev/null, but that can hide error output which you should see. ok djm@ Upstream-ID: 2f31b9b13f99dcf587e9a8ba443458e6c0d8997c