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Portable OpenSSH
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2022-11-03 10:00:43 +11:00
.github Add tests for OpenSSL 3.0.7 and LibreSSL 3.6.1. 2022-11-03 08:40:06 +11:00
contrib crank versions in RPM spec files 2022-10-04 01:45:41 +11:00
m4 Improve detection of -fzero-call-used-regs=all support 2022-02-25 11:24:04 +11:00
openbsd-compat Only run opensslver tests if built with OpenSSL. 2022-11-03 10:00:43 +11:00
regress upstream: Use variable for diff options 2022-11-01 11:10:48 +11:00
.depend update .depend 2022-10-04 01:51:42 +11:00
.git_allowed_signers additional keys 2022-08-29 13:27:45 +10:00
.git_allowed_signers.asc additional keys 2022-08-29 13:27:45 +10:00
.gitignore
.skipped-commit-ids upstream: Import regenerated moduli 2022-04-20 15:08:54 +10:00
addr.c upstream: allow ssh-keyscan(1) to accept CIDR address ranges, e.g. 2022-10-28 13:39:35 +11:00
addr.h upstream: allow ssh-keyscan(1) to accept CIDR address ranges, e.g. 2022-10-28 13:39:35 +11:00
addrmatch.c
atomicio.c remove sys/param.h in -portable, after upstream 2021-12-22 09:02:50 +11:00
atomicio.h
audit-bsm.c
audit-linux.c
audit.c
audit.h
auth2-chall.c
auth2-gss.c upstream: prepare for multiple names for authmethods 2021-12-20 09:28:07 +11:00
auth2-hostbased.c upstream: Add RequiredRSASize for sshd(8); RSA keys that fall 2022-09-17 20:39:02 +10:00
auth2-kbdint.c upstream: prepare for multiple names for authmethods 2021-12-20 09:28:07 +11:00
auth2-none.c upstream: prepare for multiple names for authmethods 2021-12-20 09:28:07 +11:00
auth2-passwd.c upstream: f sshpkt functions fail, then password is not cleared 2022-05-27 14:59:17 +10:00
auth2-pubkey.c upstream: Add RequiredRSASize for sshd(8); RSA keys that fall 2022-09-17 20:39:02 +10:00
auth2-pubkeyfile.c upstream: bump up loglevel from debug to info when unable to open 2022-07-01 13:54:53 +10:00
auth2.c upstream: avoid integer overflow of auth attempts (harmless, caught 2022-02-23 22:22:20 +11:00
auth-bsdauth.c
auth-krb5.c
auth-options.c upstream: Switch hpdelim interface to accept only ":" as delimiter. 2022-02-10 15:14:17 +11:00
auth-options.h upstream: make authorized_keys environment="..." directives 2021-07-23 14:07:19 +10:00
auth-pam.c Fix memory leak in error path. 2021-09-03 13:42:08 +10:00
auth-pam.h
auth-passwd.c
auth-rhosts.c upstream: free(3) wants stdlib.h 2022-02-24 08:24:17 +11:00
auth-shadow.c
auth-sia.c
auth-sia.h
auth.c upstream: move auth_openprincipals() and auth_openkeyfile() over to 2022-06-03 14:49:18 +10:00
auth.h upstream: make sure that UseDNS hostname lookup happens in the monitor 2022-06-16 02:12:11 +10:00
authfd.c upstream: Add authfd path to debug output. ok markus@ 2022-04-27 21:33:11 +10:00
authfd.h upstream: ssh-add side of destination constraints 2021-12-20 09:25:17 +11:00
authfile.c upstream: Make sure not to fclose() the same fd twice in case of an 2022-06-24 14:28:29 +10:00
authfile.h
bitmap.c
bitmap.h
buildpkg.sh.in
canohost.c
canohost.h
chacha.c
chacha.h
channels.c avoid Wuninitialized false positive in gcc-12ish 2022-09-19 20:59:04 +10:00
channels.h upstream: channel_new no longer frees remote_name. So update the 2022-05-05 11:34:52 +10:00
cipher-aes.c
cipher-aesctr.c
cipher-aesctr.h
cipher-chachapoly-libcrypto.c
cipher-chachapoly.c
cipher-chachapoly.h
cipher.c Remove workarounds for OpenSSL missing AES-CTR. 2022-07-25 21:49:04 +10:00
cipher.h
cleanup.c
clientloop.c upstream: Make SetEnv directives first-match-wins in both 2022-06-03 14:33:18 +10:00
clientloop.h
compat.c upstream: Always return allocated strings from the kex filtering so 2022-07-01 13:41:16 +10:00
compat.h upstream: Client-side workaround for a bug in OpenSSH 7.4: this release 2021-06-06 13:41:36 +10:00
config.guess Revert "update build-aux files to match autoconf-2.71" 2022-04-11 16:07:09 +10:00
config.sub Revert "update build-aux files to match autoconf-2.71" 2022-04-11 16:07:09 +10:00
configure.ac Check for sockaddr_in.sin_len. 2022-11-02 10:51:48 +11:00
CREDITS
crypto_api.h
defines.h Correct value for IPTOS_DSCP_LE. 2021-12-15 10:50:33 +11:00
dh.c
dh.h
digest-libc.c Use SHA.*_HMAC_BLOCK_SIZE if needed. 2021-12-23 11:36:08 +11:00
digest-openssl.c
digest.h
dispatch.c
dispatch.h
dns.c upstream: mark const string array contents const too, i.e. static 2022-02-02 10:38:59 +11:00
dns.h upstream: Ensure that all returned SSHFP records for the specified host 2021-07-19 13:46:13 +10:00
ed25519.c
entropy.c Split EGD/PRNGD interface into its own file. 2021-06-18 18:32:51 +10:00
entropy.h
fatal.c
fe25519.c
fe25519.h
fixalgorithms
fixpaths
ge25519_base.data
ge25519.c
ge25519.h
groupaccess.c
groupaccess.h
gss-genr.c need stdlib.h for free(3) 2021-10-01 16:36:24 +10:00
gss-serv-krb5.c
gss-serv.c
hash.c Remove old OpenBSD version marker. 2021-07-03 20:36:06 +10:00
hmac.c
hmac.h
hostfile.c upstream: piece of UpdateHostkeys client strictification: when 2022-01-07 09:21:38 +11:00
hostfile.h
includes.h remove sys/param.h in -portable, after upstream 2021-12-22 09:02:50 +11:00
INSTALL Note that, for now, we need variadic macros. 2022-05-06 14:46:09 +10:00
install-sh Revert "update build-aux files to match autoconf-2.71" 2022-04-11 16:07:09 +10:00
kex.c upstream: mark const string array contents const too, i.e. static 2022-02-02 10:38:59 +11:00
kex.h upstream: Fix signature algorithm selection logic for 2022-01-07 09:21:38 +11:00
kexc25519.c
kexdh.c Move signal.h up include order to match upstream. 2021-07-03 20:38:09 +10:00
kexecdh.c
kexgen.c upstream: Record session ID, host key and sig at intital KEX 2021-12-20 09:24:42 +11:00
kexgex.c
kexgexc.c upstream: Record session ID, host key and sig at intital KEX 2021-12-20 09:24:42 +11:00
kexgexs.c upstream: Record session ID, host key and sig at intital KEX 2021-12-20 09:24:42 +11:00
kexsntrup761x25519.c upstream: fix unintended sizeof pointer in debug path ok markus@ 2021-12-07 12:30:50 +11:00
krl.c upstream: avoid printing hash algorithm twice; from lucas AT sexy.is 2022-04-28 13:55:12 +10:00
krl.h
LICENCE Add a timegm implementation from Heimdal via Samba. 2022-08-11 22:51:10 +10:00
log.c upstream: allow log_stderr==2 to prefix log messages with argv[0] 2021-09-19 17:21:59 +10:00
log.h upstream: do not pass file/func to monitor; noted by Ilja van Sprundel; 2021-04-16 13:24:33 +10:00
loginrec.c remove sys/param.h in -portable, after upstream 2021-12-22 09:02:50 +11:00
loginrec.h
logintest.c
mac.c
mac.h
Makefile.in upstream: use users-groups-by-id@openssh.com sftp-server extension 2022-09-19 20:51:14 +10:00
match.c
match.h
mdoc2man.awk
misc.c upstream: allow certificate validity intervals, sshsig verification 2022-08-11 12:00:49 +10:00
misc.h upstream: Make SetEnv directives first-match-wins in both 2022-06-03 14:33:18 +10:00
mkinstalldirs
moduli upstream: Import regenerated moduli 2022-04-20 15:30:13 +10:00
moduli.5 Resync moduli.5 with upstream. 2022-04-16 14:33:20 +10:00
moduli.c upstream: fix some integer overflows in sieve_large() that show up when 2022-05-02 09:22:44 +10:00
monitor_fdpass.c
monitor_fdpass.h
monitor_wrap.c upstream: make sure that UseDNS hostname lookup happens in the monitor 2022-06-16 02:12:11 +10:00
monitor_wrap.h upstream: make sure that UseDNS hostname lookup happens in the monitor 2022-06-16 02:12:11 +10:00
monitor.c upstream: make sure that UseDNS hostname lookup happens in the monitor 2022-06-16 02:12:11 +10:00
monitor.h
msg.c
msg.h
mux.c upstream: Make SetEnv directives first-match-wins in both 2022-06-03 14:33:18 +10:00
myproposal.h upstream: select post-quantum KEX 2022-03-31 08:16:38 +11:00
nchan2.ms
nchan.c upstream: mark const string array contents const too, i.e. static 2022-02-02 10:38:59 +11:00
nchan.ms
openssh.xml.in
opensshd.init.in Replace shell function with ssh-keygen -A. 2021-08-20 18:14:13 +10:00
OVERVIEW
packet.c upstream: whitespace 2022-08-31 12:57:42 +10:00
packet.h upstream: add a ssh_packet_process_read() function that reads from 2022-01-25 12:18:35 +11:00
pathnames.h
pkcs11.h
platform-misc.c
platform-pledge.c
platform-tracing.c Include string.h and stdio.h for strerror. 2021-10-15 12:59:06 +11:00
platform.c Factor out platform-specific locked account check. 2022-03-26 12:49:50 +11:00
platform.h Missing semicolon. 2022-03-26 13:15:44 +11:00
poly1305.c
poly1305.h
progressmeter.c
progressmeter.h
PROTOCOL upstream: sftp-server(8): add a "users-groups-by-id@openssh.com" 2022-09-19 20:49:13 +10:00
PROTOCOL.agent upstream: Fix typo. From AlexanderStohr via github PR#343. 2022-09-27 08:16:44 +10:00
PROTOCOL.certkeys upstream: PROTOCOL.certkeys: update reference from IETF draft to 2021-06-06 13:24:37 +10:00
PROTOCOL.chacha20poly1305
PROTOCOL.key upstream: use consistent field names (s/char/byte) 2022-07-01 16:00:01 +10:00
PROTOCOL.krl
PROTOCOL.mux upstream: spelling ok dtucker@ 2022-01-01 15:19:48 +11:00
PROTOCOL.sshsig
PROTOCOL.u2f
readconf.c upstream: add a RequiredRSASize for checking RSA key length in 2022-09-17 20:39:02 +10:00
readconf.h upstream: add a RequiredRSASize for checking RSA key length in 2022-09-17 20:39:02 +10:00
README update release notes URL 2022-10-04 01:45:52 +11:00
README.dns
README.md mention libfido2 autodetection 2022-10-05 03:40:01 +11:00
README.platform
README.privsep
README.tun
readpass.c upstream: Avoid kill with -1 argument. The out_ctx label can be 2022-05-27 14:59:17 +10:00
rijndael.c
rijndael.h upstream: Make prototype for rijndaelEncrypt match function 2021-09-29 11:09:27 +10:00
sandbox-capsicum.c Cache timezone data in capsicum sandbox. 2022-04-23 21:14:01 +10:00
sandbox-darwin.c
sandbox-null.c
sandbox-pledge.c
sandbox-rlimit.c
sandbox-seccomp-filter.c fix SANDBOX_SECCOMP_FILTER_DEBUG 2022-08-11 08:58:28 +10:00
sandbox-solaris.c
sandbox-systrace.c
sc25519.c
sc25519.h
scp.1 upstream: add RequiredRSASize to the list of keywords accepted by 2022-09-27 08:16:44 +10:00
scp.c upstream: when scp(1) is using the SFTP protocol for transport (the 2022-10-25 08:55:11 +11:00
SECURITY.md basic SECURITY.md (refers people to the website) 2021-11-03 12:08:21 +11:00
servconf.c upstream: Add RequiredRSASize for sshd(8); RSA keys that fall 2022-09-17 20:39:02 +10:00
servconf.h upstream: Add RequiredRSASize for sshd(8); RSA keys that fall 2022-09-17 20:39:02 +10:00
serverloop.c upstream: Try to continue running local I/O for channels in state 2022-04-20 15:08:54 +10:00
serverloop.h
session.c upstream: Switch hpdelim interface to accept only ":" as delimiter. 2022-02-10 15:14:17 +11:00
session.h
sftp-client.c upstream: sftp client library support for 2022-09-19 20:49:14 +10:00
sftp-client.h upstream: sftp client library support for 2022-09-19 20:49:14 +10:00
sftp-common.c upstream: extend sftp-common.c:extend ls_file() to support supplied 2022-09-19 20:49:13 +10:00
sftp-common.h upstream: extend sftp-common.c:extend ls_file() to support supplied 2022-09-19 20:49:13 +10:00
sftp-glob.c upstream: when scp(1) is using the SFTP protocol for transport (the 2022-10-25 08:55:11 +11:00
sftp-realpath.c upstream: sys/param.h is not needed for any visible reason 2021-09-03 14:20:22 +10:00
sftp-server-main.c Remove seed_rng calls from scp, sftp, sftp-server. 2022-07-27 16:22:30 +10:00
sftp-server.8 upstream: standardise the grammar in the options list; issue 2021-08-03 09:39:57 +10:00
sftp-server.c upstream: extend sftp-common.c:extend ls_file() to support supplied 2022-09-19 20:49:13 +10:00
sftp-usergroup.c no need for glob.h here 2022-09-19 20:59:34 +10:00
sftp-usergroup.h upstream: use users-groups-by-id@openssh.com sftp-server extension 2022-09-19 20:51:14 +10:00
sftp.1 upstream: add RequiredRSASize to the list of keywords accepted by 2022-09-27 08:16:44 +10:00
sftp.c upstream: use users-groups-by-id@openssh.com sftp-server extension 2022-09-19 20:51:14 +10:00
sftp.h
sk-api.h upstream: when enrolling a resident key on a security token, check 2022-07-20 13:38:47 +10:00
sk-usbhid.c upstream: sk_enroll: never drop SSH_SK_USER_VERIFICATION_REQD flag 2022-09-14 10:16:06 +10:00
smult_curve25519_ref.c
sntrup761.c
sntrup761.sh
srclimit.c
srclimit.h
ssh2.h
ssh_api.c
ssh_api.h
ssh_config
ssh_config.5 upstream: add a RequiredRSASize for checking RSA key length in 2022-09-17 20:39:02 +10:00
ssh-add.1 upstream: Since they are deprecated, move DSA to the end of the 2022-02-07 12:27:48 +11:00
ssh-add.c upstream: Don't attempt to fprintf a null identity comment. From 2022-06-24 14:28:29 +10:00
ssh-agent.1 upstream: ssh-agent.1: - use Nm not Xr for self-ref - while here, 2022-10-25 08:55:10 +11:00
ssh-agent.c upstream: ssh-agent.1: - use Nm not Xr for self-ref - while here, 2022-10-25 08:55:10 +11:00
ssh-dss.c upstream: refactor sshkey_private_deserialize 2022-10-28 12:47:01 +11:00
ssh-ecdsa-sk.c upstream: refactor sshkey_private_deserialize 2022-10-28 12:47:01 +11:00
ssh-ecdsa.c upstream: refactor sshkey_private_deserialize 2022-10-28 12:47:01 +11:00
ssh-ed25519-sk.c upstream: refactor sshkey_private_deserialize 2022-10-28 12:47:01 +11:00
ssh-ed25519.c upstream: refactor sshkey_private_deserialize 2022-10-28 12:47:01 +11:00
ssh-gss.h
ssh-keygen.1 upstream: fix repeated words ok miod@ jmc@ 2022-09-14 10:16:04 +10:00
ssh-keygen.c upstream: allow certificate validity intervals, sshsig verification 2022-08-11 12:00:49 +10:00
ssh-keyscan.1 upstream: allow ssh-keyscan(1) to accept CIDR address ranges, e.g. 2022-10-28 13:39:35 +11:00
ssh-keyscan.c upstream: allow ssh-keyscan(1) to accept CIDR address ranges, e.g. 2022-10-28 13:39:35 +11:00
ssh-keysign.8 upstream: man pages: add missing commas between subordinate and 2022-04-06 09:16:05 +10:00
ssh-keysign.c upstream: avoid double-free in error path introduced in r1.70; report 2022-08-01 21:11:33 +10:00
ssh-pkcs11-client.c make OPENSSL_HAS_ECC checks more thorough 2021-10-01 16:36:24 +10:00
ssh-pkcs11-helper.8 upstream: mention that the helpers are used by ssh(1), ssh-agent(1) 2022-04-29 13:26:24 +10:00
ssh-pkcs11-helper.c upstream: check for POLLHUP wherever we check for POLLIN 2021-11-18 14:32:54 +11:00
ssh-pkcs11.c upstream: avoid xmalloc(0) for PKCS#11 keyid for ECDSA keys (we 2021-11-19 08:12:57 +11:00
ssh-pkcs11.h
ssh-rsa.c upstream: put sshkey_check_rsa_length() back in sshkey.c to unbreak 2022-10-28 13:49:01 +11:00
ssh-sandbox.h
ssh-sk-client.c upstream: sshsk_load_resident: don't preallocate resp 2022-01-14 14:40:40 +11:00
ssh-sk-helper.8 upstream: mention that the helpers are used by ssh(1), ssh-agent(1) 2022-04-29 13:26:24 +10:00
ssh-sk-helper.c upstream: Don't leak SK device. Patch from Pedro Martelletto via 2022-04-29 13:26:24 +10:00
ssh-sk.c upstream: when enrolling a resident key on a security token, check 2022-07-20 13:38:47 +10:00
ssh-sk.h upstream: When downloading resident keys from a FIDO token, pass 2021-10-28 13:56:59 +11:00
ssh-xmss.c upstream: refactor sshkey_private_deserialize 2022-10-28 12:47:01 +11:00
ssh.1 upstream: add a RequiredRSASize for checking RSA key length in 2022-09-17 20:39:02 +10:00
ssh.c upstream: Be more paranoid with host/domain names coming from the 2022-10-25 10:16:35 +11:00
ssh.h
sshbuf-getput-basic.c upstream: revert previous; it was broken (spotted by Theo) 2022-05-25 16:06:03 +10:00
sshbuf-getput-crypto.c upstream: revert previous; it was broken (spotted by Theo) 2022-05-25 16:06:03 +10:00
sshbuf-io.c
sshbuf-misc.c upstream: Add a sshbuf_read() that attempts to read(2) directly in 2022-01-25 10:45:47 +11:00
sshbuf.c upstream: revert previous; it was broken (spotted by Theo) 2022-05-25 16:06:03 +10:00
sshbuf.h upstream: revert previous; it was broken (spotted by Theo) 2022-05-25 16:06:03 +10:00
sshconnect2.c upstream: add a RequiredRSASize for checking RSA key length in 2022-09-17 20:39:02 +10:00
sshconnect.c upstream: Be more paranoid with host/domain names coming from the 2022-10-25 10:16:35 +11:00
sshconnect.h
sshd_config Replace remaining references to ChallengeResponse. 2021-07-03 19:27:43 +10:00
sshd_config.5 upstream: Add RequiredRSASize for sshd(8); RSA keys that fall 2022-09-17 20:39:02 +10:00
sshd.8 upstream: .Li -> .Vt where appropriate; from josiah frentsos, 2022-09-14 10:16:04 +10:00
sshd.c upstream: refactor sshkey_private_serialize_opt() 2022-10-28 12:47:01 +11:00
ssherr.c
ssherr.h
sshkey-xmss.c upstream: factor out key generation 2022-10-28 12:46:58 +11:00
sshkey-xmss.h upstream: factor out key generation 2022-10-28 12:46:58 +11:00
sshkey.c upstream: put sshkey_check_rsa_length() back in sshkey.c to unbreak 2022-10-28 13:49:01 +11:00
sshkey.h upstream: refactor sshkey_private_deserialize 2022-10-28 12:47:01 +11:00
sshlogin.c Include stdlib.h for free() prototype. 2022-04-23 21:14:01 +10:00
sshlogin.h
sshpty.c
sshpty.h
sshsig.c upstream: double free() in error path; from Eusgor via GHPR333 2022-08-19 13:13:53 +10:00
sshsig.h upstream: Add ssh-keygen -Y match-principals operation to perform 2021-11-27 18:22:41 +11:00
sshtty.c
survey.sh.in
TODO
ttymodes.c
ttymodes.h
uidswap.c
uidswap.h
umac128.c
umac.c upstream: spelling 2022-01-04 18:22:46 +11:00
umac.h upstream: spelling ok dtucker@ 2022-01-01 15:19:48 +11:00
utf8.c
utf8.h
verify.c
version.h upstream: openssh-9.1 2022-09-27 19:37:13 +10:00
xmalloc.c upstream: ssh: xstrdup(): use memcpy(3) 2022-03-18 13:33:36 +11:00
xmalloc.h
xmss_commons.c
xmss_commons.h
xmss_fast.c
xmss_fast.h
xmss_hash_address.c
xmss_hash_address.h
xmss_hash.c upstream: Remove unnecessary includes: openssl/hmac.h and 2022-04-27 21:30:01 +10:00
xmss_hash.h
xmss_wots.c
xmss_wots.h

Portable OpenSSH

C/C++ CI Fuzzing Status

OpenSSH is a complete implementation of the SSH protocol (version 2) for secure remote login, command execution and file transfer. It includes a client ssh and server sshd, file transfer utilities scp and sftp as well as tools for key generation (ssh-keygen), run-time key storage (ssh-agent) and a number of supporting programs.

This is a port of OpenBSD's OpenSSH to most Unix-like operating systems, including Linux, OS X and Cygwin. Portable OpenSSH polyfills OpenBSD APIs that are not available elsewhere, adds sshd sandboxing for more operating systems and includes support for OS-native authentication and auditing (e.g. using PAM).

Documentation

The official documentation for OpenSSH are the man pages for each tool:

Stable Releases

Stable release tarballs are available from a number of download mirrors. We recommend the use of a stable release for most users. Please read the release notes for details of recent changes and potential incompatibilities.

Building Portable OpenSSH

Dependencies

Portable OpenSSH is built using autoconf and make. It requires a working C compiler, standard library and headers.

libcrypto from either LibreSSL or OpenSSL may also be used. OpenSSH may be built without either of these, but the resulting binaries will have only a subset of the cryptographic algorithms normally available.

zlib is optional; without it transport compression is not supported.

FIDO security token support needs libfido2 and its dependencies and will be enabled automatically if they are found.

In addition, certain platforms and build-time options may require additional dependencies; see README.platform for details about your platform.

Building a release

Releases include a pre-built copy of the configure script and may be built using:

tar zxvf openssh-X.YpZ.tar.gz
cd openssh
./configure # [options]
make && make tests

See the Build-time Customisation section below for configure options. If you plan on installing OpenSSH to your system, then you will usually want to specify destination paths.

Building from git

If building from git, you'll need autoconf installed to build the configure script. The following commands will check out and build portable OpenSSH from git:

git clone https://github.com/openssh/openssh-portable # or https://anongit.mindrot.org/openssh.git
cd openssh-portable
autoreconf
./configure
make && make tests

Build-time Customisation

There are many build-time customisation options available. All Autoconf destination path flags (e.g. --prefix) are supported (and are usually required if you want to install OpenSSH).

For a full list of available flags, run ./configure --help but a few of the more frequently-used ones are described below. Some of these flags will require additional libraries and/or headers be installed.

Flag Meaning
--with-pam Enable PAM support. OpenPAM, Linux PAM and Solaris PAM are supported.
--with-libedit Enable libedit support for sftp.
--with-kerberos5 Enable Kerberos/GSSAPI support. Both Heimdal and MIT Kerberos implementations are supported.
--with-selinux Enable SELinux support.

Development

Portable OpenSSH development is discussed on the openssh-unix-dev mailing list (archive mirror). Bugs and feature requests are tracked on our Bugzilla.

Reporting bugs

Non-security bugs may be reported to the developers via Bugzilla or via the mailing list above. Security bugs should be reported to openssh@openssh.com.