search for: ssh_dispatch_run_fatal

...in openssh and I wanted to know whether the following system calls should be added to the filter: 1. getgroups - do_authentication2->dispatch_run_fatal->sshpkt_fatal->logdie->cleanup_exit->do_cleanup->temporarily_use_uid->getgroups 2. setgroups - do_authentication2->ssh_dispatch_run_fatal->sshpkt_fatal->logdie->cleanup_exit->do_cleanup->temporarily_use_uid->initgroups->setgroups 3. unlink - do_authentication2->ssh_dispatch_run_fatal->sshpkt_fatal->logdie->cleanup_exit->do_cleanup->auth_sock_cleanup_proc->unlink 4. rmdir - do_authenti...

...on Daemon ([::1]:60865). systemd[1]: Starting OpenSSH Per-Connection Daemon ([::1]:60865)... systemd[1]: Started OpenSSH Per-Connection Daemon (127.0.0.1:41286). systemd[1]: Starting OpenSSH Per-Connection Daemon (127.0.0.1:41286)... sshd[2854]: Connection closed by ::1 [preauth] sshd[2855]: fatal: ssh_dispatch_run_fatal: Connection reset by peer [preauth] Looks like this happens if we have two incoming connection (::1 and 127.0.0.1 are checked) at the some time. Why does this happen? Who's fault is it? As these are TCP connections I would expect it is not a problem to know what packet belongs to what connecti...

all but one lan host (gv)can ssh connect to host 2x Included windows 10, several linux. 2x is a solaris host. That problem host (gv) can connect to all others but 2x. 2x can connect to all other encluding the problem host (gv) So gv ssh to 2x throws this error: ssh_dispatch_run_fatal: Connection to 192.168.1.42 port 22: incorrect signature. 192.168.1.42 is 2x. So incoming ssh from gv to 2x has the problem. So far I have removed all ssh config and files on both hosts and reinstalled openssh. The problem remains Below is the full output of ssh -vv gv (a gentoo host) ssh to...

Darren Tucker <dtucker at zip.com.au> writes: > On Tue, Nov 8, 2016 at 3:30 PM, Harry Putnam <reader at newsguy.com> wrote: > [...] >> After having 7.3p1 & 6.8p1 fail with same wording... I tried 6.7p1 and >> find it fails with what looks like the same problem but has slightly >> different wording. > > I set up the same versions (server:OpenSSH_6.6p1,

https://bugzilla.mindrot.org/show_bug.cgi?id=2727 Bug ID: 2727 Summary: ssh_dispatch_run_fatal: Connection to 127.0.0.1 port 8002: message authentication code incorrect Product: Portable OpenSSH Version: 7.5p1 Hardware: ix86 OS: Linux Status: NEW Severity: major Priority: P5 Component...

...oid.youtube/cache/exo/2.3339089.1529636238000.v3.exo) storage/emulated/0/Android/data/com.google.android.youtube/cache/exo/2.3339089.1529636238000.v3.exo calling match_sums //storage/emulated/0/Android/data/com.google.android.youtube/cache/exo/2.3339089.1529636238000.v3.exo Corrupted MAC on input. ssh_dispatch_run_fatal: Connection to 192.168.1.100 port 22: message authentication code incorrect rsync: connection unexpectedly closed (18049139 bytes received so far) [receiver] rsync error: error in rsync protocol data stream (code 12) at io.c(226) [receiver=3.1.3] [receiver] _exit_cleanup(code=12, file=io.c, line...

Darren Tucker <dtucker at zip.com.au> writes: > On Tue, Nov 8, 2016 at 1:02 PM, Harry Putnam <reader at newsguy.com> wrote: > [...] >> gv harry> ssh -vv 2x >> >> OpenSSH_7.3p1-hpn14v11, OpenSSL 1.0.2j 26 Sep 2016 > > this is a third-party modified version of OpenSSH. Can you reproduce > the problem with a stock OpenSSH from the source from

https://bugzilla.mindrot.org/show_bug.cgi?id=2327 Bug ID: 2327 Summary: sshd to log one unique string or prefix after connection failure, no matter why. Product: Portable OpenSSH Version: 6.7p1 Hardware: All OS: Linux Status: NEW Severity: enhancement Priority: P5

Darren Tucker <dtucker at zip.com.au> writes: > On Tue, Nov 8, 2016 at 2:43 PM, Harry Putnam <reader at newsguy.com> wrote: >> Darren Tucker <dtucker at zip.com.au> writes: >> >>> On Tue, Nov 8, 2016 at 1:02 PM, Harry Putnam <reader at newsguy.com> wrote: >>> [...] >>>> gv harry> ssh -vv 2x >>>> >>>>

...to send / retrieve > files to / from SSHDroid Pro but recently I have started having a problem > when transferring large numbers of file - I am pretty sure it started after > upgrading from Fedora x86_64 28 to 29 - but I am not 100% sure. Below is [...] > Corrupted MAC on input. > ssh_dispatch_run_fatal: Connection to 192.168.1.100 port 22: message > authentication code incorrect ssh's communication gets disrupted somehow, and stops the connection, thus causing rsync to fail. This is a problem with ssh, not with rsync. Try enabling ssh debug options, and try using different ssh ciphers....

I have a cron script that polls various machines for their configs and archives any changes. When it connects to an OpenWrt router running "OpenSSH_9.1p1, OpenSSL 1.1.1s 1 Nov 2022", it sometimes gets this error: Bad packet length 1231976033. ssh_dispatch_run_fatal: Connection to 192.168.8.1 port 22: message authentication code incorrect What's odd is that the length is *always* 1231976033 (which is 0x496E7661 or "Inva" in ASCII). The client is Ubuntu 22.04.2 LTS, and it's version is "OpenSSH_9.1p1, OpenSSL 3.0.2 15 Mar 2022". I...

...a bit from upstream sources): #0 grace_alarm_handler (sig=14) at ../openssh-6.8p1/sshd.c:380 #1 <signal handler called> #2 0xb7fd9be8 in ?? () #3 0x080baaef in ssh_dispatch_run (ssh=0x8153780, mode=0, done=0x8151660, ctxt=0x8151660) at ../openssh-6.8p1/dispatch.c:101 #4 0x080bac86 in ssh_dispatch_run_fatal (ssh=0x8153780, mode=0, done=0x8151660, ctxt=0x8151660) at ../openssh-6.8p1/dispatch.c:140 #5 0x08065103 in do_authentication2 (authctxt=0x8151660) at ../openssh-6.8p1/auth2.c:175 #6 0x08053cea in main (ac=4, av=0x814e3f8) at ../openssh-6.8p1/sshd.c:2314 [1] http://serverfault.com/questions...

On Tue, 18 Jun 2024, Joseph S. Testa II wrote: > In the upcoming v9.8 release notes I see "the server will now block > client addresses that repeatedly fail authentication, repeatedly > connect without ever completing authentication or that crash the > server." Has this new PerSourcePenalties config directive been tested > against the DHEat attack? Not explicitly but

...ssion[157407]: Connection reset by 10.0.0.1 port 45126 [preauth] Jun 19 09:09:47 server sshd-session[157409]: Connection reset by 10.0.0.1 port 45134 [preauth] Jun 19 09:09:47 server sshd-session[157411]: Connection reset by 10.0.0.1 port 45148 [preauth] Jun 19 09:09:47 server sshd-session[157413]: ssh_dispatch_run_fatal: Connection from 10.0.0.1 port 45154: DH GEX group out of range [preauth] Jun 19 09:09:47 server sshd-session[157415]: Connection reset by 10.0.0.1 port 45160 [preauth] Jun 19 09:09:47 server sshd-session[157417]: Connection reset by 10.0.0.1 port 45162 [preauth] Jun 19 09:09:47 server sshd-session...

..., I get the following errors from sshd, and the client (PuTTY) reports that the server unexpectedly closed the connection. No login prompt is displayed. 1995-11-22T00:18:33.755757+00:00 auth.info sshd[27262]: Corrupted MAC on input. [preauth] 1995-11-22T00:18:33.756013+00:00 auth.info sshd[27262]: ssh_dispatch_run_fatal: Connection from 192.168.254.100 port 54167: message authentication code incorrect [preauth] Thinking that the issue might be fixed in a newer version, I then tried upgrading to openssh 9.8p1, openssl 3.3.2, and cryptodev-linux 1.13. Now, the session starts and I get a login prompt. After authenti...

...chment 3614 --> https://bugzilla.mindrot.org/attachment.cgi?id=3614&action=edit patch with a kludge fix An update to net-misc/openssh-9.0_p1-r6 (Gentoo port) this morning led immediately to nondeterministic (~50% failure rate) connection failures, both in ssh and sshd, with this message: ssh_dispatch_run_fatal: Connection to a.b.c.d port 22: incorrect signature It quickly became apparent that the problem only affected connections authenticated with ED25519. I found, by instrumenting ed25519.c:crypto_sign_ed25519_open(), that bit #256 (of 255 valid bits) in sm[] was nondeterministically set or clear, wh...

https://bugzilla.mindrot.org/show_bug.cgi?id=3522 Bug ID: 3522 Summary: Crash with "free(): double free detected" with old clients Product: Portable OpenSSH Version: 9.1p1 Hardware: amd64 OS: Linux Status: NEW Severity: minor Priority: P5 Component: sshd

https://bugzilla.mindrot.org/show_bug.cgi?id=3666 Bug ID: 3666 Summary: sshd crash Product: Portable OpenSSH Version: 8.2p1 Hardware: Other OS: Linux Status: NEW Severity: critical Priority: P5 Component: sshd Assignee: unassigned-bugs at mindrot.org Reporter:

...lowing errors from sshd, and the client (PuTTY) reports that the server unexpectedly closed the connection. No login prompt is displayed. > > 1995-11-22T00:18:33.755757+00:00 auth.info sshd[27262]: Corrupted MAC on input. [preauth] > 1995-11-22T00:18:33.756013+00:00 auth.info sshd[27262]: ssh_dispatch_run_fatal: Connection from 192.168.254.100 port 54167: message authentication code incorrect [preauth] > > Thinking that the issue might be fixed in a newer version, I then tried upgrading to openssh 9.8p1, openssl 3.3.2, and cryptodev-linux 1.13. Now, the session starts and I get a login prompt. Afte...

In sshconnect.c there are two global variables for server_version_string client_version_string. These are used just in a few functions and can easily be passed as parameters. Also, there is a strange construct, where their memory is allocated to the global pointers, then copies of these pointers are assigned to the kex structure. The kex_free finally frees them via cleanup of the kex