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[auth-rhosts.c monitor.c monitor_wrap.c session.c auth-options.c sshd.c]
Hold authentication debug messages until after successful authentication.
Fixes an info leak of environment variables specified in authorized_keys,
reported by Jacob Appelbaum. ok djm@
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- djm@cvs.openbsd.org 2010/02/26 20:29:54
[PROTOCOL PROTOCOL.agent PROTOCOL.certkeys addrmatch.c auth-options.c]
[auth-options.h auth.h auth2-pubkey.c authfd.c dns.c dns.h hostfile.c]
[hostfile.h kex.h kexdhs.c kexgexs.c key.c key.h match.h monitor.c]
[myproposal.h servconf.c servconf.h ssh-add.c ssh-agent.c ssh-dss.c]
[ssh-keygen.1 ssh-keygen.c ssh-rsa.c ssh.1 ssh.c ssh2.h sshconnect.c]
[sshconnect2.c sshd.8 sshd.c sshd_config.5]
Add support for certificate key types for users and hosts.
OpenSSH certificate key types are not X.509 certificates, but a much
simpler format that encodes a public key, identity information and
some validity constraints and signs it with a CA key. CA keys are
regular SSH keys. This certificate style avoids the attack surface
of X.509 certificates and is very easy to deploy.
Certified host keys allow automatic acceptance of new host keys
when a CA certificate is marked as sh/known_hosts.
see VERIFYING HOST KEYS in ssh(1) for details.
Certified user keys allow authentication of users when the signing
CA key is marked as trusted in authorized_keys. See "AUTHORIZED_KEYS
FILE FORMAT" in sshd(8) for details.
Certificates are minted using ssh-keygen(1), documentation is in
the "CERTIFICATES" section of that manpage.
Documentation on the format of certificates is in the file
PROTOCOL.certkeys
feedback and ok markus@
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[monitor.c packet.c]
Fix warnings found by chl@ and djm@ and change roaming_atomicio's
return type to match atomicio's
Diff from djm@, ok markus@
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[sshd.c packet.c serverloop.c monitor_wrap.c clientloop.c sshconnect.c
monitor.c Added roaming.h roaming_common.c roaming_dummy.c]
Keep track of number of bytes read and written. Needed for upcoming
changes. Most code from Martin Forssen, maf at appgate dot com.
ok markus@
Also, applied appropriate changes to Makefile.in
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[canohost.h canohost.c]
Add clear_cached_addr(), needed for upcoming changes allowing the peer
address to change.
ok markus@
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[monitor.c]
some paranoia: check that the serialised key is really KEY_RSA before
diddling its internals
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[auth.h auth2.c monitor.c monitor.h monitor_wrap.c monitor_wrap.h]
[readconf.c readconf.h servconf.c servconf.h ssh2.h ssh_config.5]
[sshconnect2.c sshd_config.5 jpake.c jpake.h schnorr.c auth2-jpake.c]
[Makefile.in]
Add support for an experimental zero-knowledge password authentication
method using the J-PAKE protocol described in F. Hao, P. Ryan,
"Password Authenticated Key Exchange by Juggling", 16th Workshop on
Security Protocols, Cambridge, April 2008.
This method allows password-based authentication without exposing
the password to the server. Instead, the client and server exchange
cryptographic proofs to demonstrate of knowledge of the password while
revealing nothing useful to an attacker or compromised endpoint.
This is experimental, work-in-progress code and is presently
compiled-time disabled (turn on -DJPAKE in Makefile.inc).
"just commit it. It isn't too intrusive." deraadt@
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[clientloop.c monitor.c monitor_wrap.c packet.c packet.h sshd.c]
sync v1 and v2 traffic accounting; add it to sshd, too;
ok djm@, dtucker@
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[monitor.c]
Make debug a little clearer. ok djm@
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[monitor.c]
Clear key options in the monitor on failed authentication, prevents
applying additional restrictions to non-pubkey authentications in
the case where pubkey fails but another method subsequently succeeds.
bz #1472, found by Colin Watson, ok markus@ djm
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[monitor.c monitor_wrap.c session.h servconf.c servconf.h session.c]
[sshd_config sshd_config.5]
Make the maximum number of sessions run-time controllable via
a sshd_config MaxSessions knob. This is useful for disabling
login/shell/subsystem access while leaving port-forwarding working
(MaxSessions 0), disabling connection multiplexing (MaxSessions 1) or
simply increasing the number of allows multiplexed sessions.
Because some bozos are sure to configure MaxSessions in excess of the
number of available file descriptors in sshd (which, at peak, might be
as many as 9*MaxSessions), audit sshd to ensure that it doesn't leak fds
on error paths, and make it fail gracefully on out-of-fd conditions -
sending channel errors instead of than exiting with fatal().
bz#1090; MaxSessions config bits and manpage from junyer AT gmail.com
ok markus@
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[auth-options.c auth1.c channels.c channels.h clientloop.c gss-serv.c]
[monitor.c monitor_wrap.c nchan.c servconf.c serverloop.c session.c]
[ssh.c sshd.c]
Implement a channel success/failure status confirmation callback
mechanism. Each channel maintains a queue of callbacks, which will
be drained in order (RFC4253 guarantees confirm messages are not
reordered within an channel).
Also includes a abandonment callback to clean up if a channel is
closed without sending confirmation messages. This probably
shouldn't happen in compliant implementations, but it could be
abused to leak memory.
ok markus@ (as part of a larger diff)
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pam_open_session and pam_close_session into the privsep monitor, which
will ensure that pam_session_close is called as root. Patch from Tomas
Mraz.
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[monitor_wrap.c monitor.c]
Send config block back to slave for invalid users too so options
set by a Match block (eg Banner) behave the same for non-existent
users. Found by and ok djm@
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[auth-bsdauth.c auth-passwd.c auth.c auth.h auth1.c auth2-chall.c]
[monitor.c monitor_wrap.c]
unifdef -DBSD_AUTH
unifdef -USKEY
These options have been in use for some years;
ok markus@ "no objection" millert@
(NB. RCD ID sync only for portable)
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[clientloop.c monitor.c monitor_fdpass.c monitor_fdpass.h]
[monitor_wrap.c ssh.c]
make file descriptor passing code return an error rather than call fatal()
when it encounters problems, and use this to make session multiplexing
masters survive slaves failing to pass all stdio FDs; ok markus@
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[monitor.c]
pass received SIGINT from monitor to postauth child so it can clean
up properly. bz#1196, patch from senthilkumar_sen AT hotpop.com;
ok markus@
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[monitor_wrap.c servconf.c servconf.h monitor.c sshd_config.5]
Teach Match how handle config directives that are used before
authentication. This allows configurations such as permitting password
authentication from the local net only while requiring pubkey from
offsite. ok djm@, man page bits ok jmc@
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[monitor.c version.h]
correctly check for bad signatures in the monitor, otherwise the monitor
and the unpriv process can get out of sync. with dtucker@, ok djm@,
dtucker@
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using Protocol 1. From jhb at freebsd.
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[openbsd-compat/rresvport.c] Some more headers: netinet/in.h
sys/socket.h and unistd.h in various places
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[auth-rsa.c auth-shadow.c auth-sia.c auth1.c auth2-chall.c]
[auth2-gss.c auth2-kbdint.c auth2-none.c authfd.c authfile.c]
[cipher-3des1.c cipher-aes.c cipher-bf1.c cipher-ctr.c clientloop.c]
[dh.c dns.c entropy.c gss-serv-krb5.c gss-serv.c hostfile.c kex.c]
[kexdhc.c kexdhs.c kexgexc.c kexgexs.c key.c loginrec.c mac.c]
[md5crypt.c monitor.c monitor_wrap.c readconf.c rsa.c]
[scard-opensc.c scard.c session.c ssh-add.c ssh-agent.c ssh-dss.c]
[ssh-keygen.c ssh-keysign.c ssh-rsa.c ssh.c sshconnect.c]
[sshconnect1.c sshconnect2.c sshd.c rc4.diff]
[openbsd-compat/bsd-cray.c openbsd-compat/port-aix.c]
[openbsd-compat/port-linux.c openbsd-compat/port-solaris.c]
[openbsd-compat/port-uw.c]
Lots of headers for SCO OSR6, mainly adding stdarg.h for log.h;
compile problems reported by rac AT tenzing.org
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[monitor.c monitor_wrap.c]
Revert previous include file ordering change, for ssh to compile under
gcc2 (or until openssl include files are cleaned of parameter names
in function prototypes)
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- stevesk@cvs.openbsd.org 2006/08/06 01:13:32
[compress.c monitor.c monitor_wrap.c]
"zlib.h" can be <zlib.h>; ok djm@ markus@
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[monitor.c session.c ssh-agent.c]
spaces
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[OVERVIEW atomicio.c atomicio.h auth-bsdauth.c auth-chall.c auth-krb5.c]
[auth-options.c auth-options.h auth-passwd.c auth-rh-rsa.c auth-rhosts.c]
[auth-rsa.c auth-skey.c auth.c auth.h auth1.c auth2-chall.c auth2-gss.c]
[auth2-hostbased.c auth2-kbdint.c auth2-none.c auth2-passwd.c ]
[auth2-pubkey.c auth2.c authfd.c authfd.h authfile.c bufaux.c bufbn.c]
[buffer.c buffer.h canohost.c channels.c channels.h cipher-3des1.c]
[cipher-bf1.c cipher-ctr.c cipher.c cleanup.c clientloop.c compat.c]
[compress.c deattack.c dh.c dispatch.c dns.c dns.h fatal.c groupaccess.c]
[groupaccess.h gss-genr.c gss-serv-krb5.c gss-serv.c hostfile.c kex.c]
[kex.h kexdh.c kexdhc.c kexdhs.c kexgex.c kexgexc.c kexgexs.c key.c]
[key.h log.c log.h mac.c match.c md-sha256.c misc.c misc.h moduli.c]
[monitor.c monitor_fdpass.c monitor_mm.c monitor_mm.h monitor_wrap.c]
[monitor_wrap.h msg.c nchan.c packet.c progressmeter.c readconf.c]
[readconf.h readpass.c rsa.c scard.c scard.h scp.c servconf.c servconf.h]
[serverloop.c session.c session.h sftp-client.c sftp-common.c]
[sftp-common.h sftp-glob.c sftp-server.c sftp.c ssh-add.c ssh-agent.c]
[ssh-dss.c ssh-gss.h ssh-keygen.c ssh-keyscan.c ssh-keysign.c ssh-rsa.c]
[ssh.c ssh.h sshconnect.c sshconnect.h sshconnect1.c sshconnect2.c]
[sshd.c sshlogin.c sshlogin.h sshpty.c sshpty.h sshtty.c ttymodes.c]
[uidswap.c uidswap.h uuencode.c uuencode.h xmalloc.c xmalloc.h]
[loginrec.c loginrec.h openbsd-compat/port-aix.c openbsd-compat/port-tun.h]
almost entirely get rid of the culture of ".h files that include .h files"
ok djm, sort of ok stevesk
makes the pain stop in one easy step
NB. portable commit contains everything *except* removing includes.h, as
that will take a fair bit more work as we move headers that are required
for portability workarounds to defines.h. (also, this step wasn't "easy")
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[authfd.c authfile.c dh.c canohost.c channels.c clientloop.c compat.c]
[hostfile.c kex.c log.c misc.c moduli.c monitor.c packet.c readpass.c]
[scp.c servconf.c session.c sftp-server.c sftp.c ssh-add.c ssh-agent.c]
[ssh-keygen.c ssh-keyscan.c ssh-keysign.c ssh.c sshconnect.c]
[sshconnect1.c sshd.c xmalloc.c]
move #include <stdlib.h> out of includes.h
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[atomicio.c auth.c dh.c authfile.c buffer.c clientloop.c kex.c]
[groupaccess.c gss-genr.c kexgexs.c misc.c monitor.c monitor_mm.c]
[packet.c scp.c serverloop.c session.c sftp-client.c sftp-common.c]
[sftp-server.c sftp.c ssh-add.c ssh-agent.c ssh-keygen.c sshlogin.c]
[uidswap.c xmalloc.c]
move #include <sys/param.h> out of includes.h
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[atomicio.c auth-options.c auth-passwd.c auth-rhosts.c auth-rsa.c]
[auth.c auth1.c auth2-chall.c auth2-hostbased.c auth2-passwd.c auth2.c]
[authfd.c authfile.c bufaux.c bufbn.c buffer.c canohost.c channels.c]
[cipher-3des1.c cipher-bf1.c cipher-ctr.c cipher.c clientloop.c]
[compat.c deattack.c dh.c dns.c gss-genr.c gss-serv.c hostfile.c]
[includes.h kex.c kexdhc.c kexdhs.c kexgexc.c kexgexs.c key.c log.c]
[mac.c match.c md-sha256.c misc.c moduli.c monitor.c monitor_fdpass.c]
[monitor_mm.c monitor_wrap.c msg.c nchan.c packet.c rsa.c]
[progressmeter.c readconf.c readpass.c scp.c servconf.c serverloop.c]
[session.c sftp-client.c sftp-common.c sftp-glob.c sftp-server.c sftp.c]
[ssh-add.c ssh-agent.c ssh-dss.c ssh-keygen.c ssh-keyscan.c]
[ssh-keysign.c ssh-rsa.c ssh.c sshconnect.c sshconnect1.c sshconnect2.c]
[sshd.c sshlogin.c sshpty.c ttymodes.c uidswap.c xmalloc.c]
move #include <string.h> out of includes.h
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[scp.c auth.c monitor.c serverloop.c sftp-server.c sshpty.c readpass.c
sshd.c monitor_wrap.c monitor_fdpass.c ssh-agent.c ttymodes.c atomicio.c
includes.h session.c sshlogin.c monitor_mm.c packet.c sshconnect2.c
sftp-client.c nchan.c clientloop.c sftp.c misc.c canohost.c channels.c
ssh-keygen.c progressmeter.c uidswap.c msg.c readconf.c sshconnect.c]
move #include <errno.h> out of includes.h; ok markus@
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[auth2-none.c authfd.c authfile.c includes.h misc.c monitor.c]
[readpass.c scp.c serverloop.c sftp-client.c sftp-server.c]
[ssh-add.c ssh-agent.c ssh-keygen.c ssh-keysign.c ssh.c sshd.c]
[sshlogin.c sshpty.c]
move #include <fcntl.h> out of includes.h
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[log.c]
move user includes after /usr/include files
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[monitor.c session.c]
missed these from last commit:
move #include <sys/socket.h> out of includes.h
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[authfd.c canohost.c clientloop.c dns.c dns.h includes.h]
[monitor_fdpass.c nchan.c packet.c servconf.c sftp.c ssh-agent.c]
[ssh-keyscan.c ssh.c sshconnect.h sshd.c sshlogin.h]
move #include <sys/socket.h> out of includes.h
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[auth-options.c auth-options.h auth-passwd.c auth-rh-rsa.c]
[auth-rhosts.c auth-rsa.c auth.c auth.h auth2-hostbased.c]
[auth2-pubkey.c auth2.c includes.h misc.c misc.h monitor.c]
[monitor_wrap.c monitor_wrap.h scp.c serverloop.c session.c]
[session.h sftp-common.c ssh-add.c ssh-keygen.c ssh-keysign.c]
[ssh.c sshconnect.c sshconnect.h sshd.c sshpty.c sshpty.h uidswap.c]
[uidswap.h]
move #include <pwd.h> out of includes.h; ok markus@
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and slave, we can remove the special-case handling in the audit hook in
auth_log.
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session.c ssh-rand-helper.c sshd.c openbsd-compat/bsd-cygwin_util.c
openbsd-compat/setproctitle.c] Convert malloc(foo*bar) -> calloc(foo,bar)
in Portable-only code; since calloc zeros, remove now-redundant memsets.
Also add a couple of sanity checks. With & ok djm@
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[auth.c monitor.c]
Prevent duplicate log messages when privsep=yes; ok djm@
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[atomicio.c auth-bsdauth.c auth-chall.c auth-options.c auth-passwd.c]
[auth-rh-rsa.c auth-rhosts.c auth-rsa.c auth-skey.c auth.c auth1.c]
[auth2-chall.c auth2-hostbased.c auth2-kbdint.c auth2-none.c]
[auth2-passwd.c auth2-pubkey.c auth2.c authfd.c authfile.c bufaux.c]
[buffer.c canohost.c channels.c cipher-3des1.c cipher-bf1.c]
[cipher-ctr.c cipher.c cleanup.c clientloop.c compat.c compress.c]
[deattack.c dh.c dispatch.c fatal.c groupaccess.c hostfile.c kex.c]
[kexdh.c kexdhc.c kexdhs.c kexgex.c kexgexc.c kexgexs.c key.c log.c]
[mac.c match.c md-sha256.c misc.c monitor.c monitor_fdpass.c]
[monitor_mm.c monitor_wrap.c msg.c nchan.c packet.c progressmeter.c]
[readconf.c readpass.c rsa.c scard.c scp.c servconf.c serverloop.c]
[session.c sftp-client.c sftp-common.c sftp-glob.c sftp-server.c]
[sftp.c ssh-add.c ssh-agent.c ssh-dss.c ssh-keygen.c ssh-keyscan.c]
[ssh-keysign.c ssh-rsa.c ssh.c sshconnect.c sshconnect1.c]
[sshconnect2.c sshd.c sshlogin.c sshpty.c sshtty.c ttymodes.c]
[uidswap.c uuencode.c xmalloc.c]
Put $OpenBSD$ tags back (as comments) to replace the RCSID()s that
Theo nuked - our scripts to sync -portable need them in the files
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[auth-bsdauth.c auth-skey.c auth.c auth2-chall.c channels.c]
[clientloop.c deattack.c gss-genr.c kex.c key.c misc.c moduli.c]
[monitor.c monitor_wrap.c packet.c scard.c sftp-server.c ssh-agent.c]
[ssh-keyscan.c ssh.c sshconnect.c sshconnect2.c sshd.c uuencode.c]
[xmalloc.c xmalloc.h]
introduce xcalloc() and xasprintf() failure-checked allocations
functions and use them throughout openssh
xcalloc is particularly important because malloc(nmemb * size) is a
dangerous idiom (subject to integer overflow) and it is time for it
to die
feedback and ok deraadt@
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[monitor.c]
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