Displaying 20 results from an estimated 700 matches similar to: "bug & patch in ServerAliveInterval (openssh 4.3-p2)"
2003 Sep 15
1
SCO 3.2v4.2 and OpenSSH -current --> connection hangs and does no t close
Greetings,
I have a problem with OpenSSH -current and SCO 3.2v4.2,
when I execute a remote command or exit from a session,
the connection hangs, ( line 326 of serverloop.c).
This problem only exists when using ssh2.
server side debug (-d -d -d ):
debug1: Received SIGCHLD.
debug2: channel 0: read failed
debug2: channel 0: close_read
debug2: channel 0: input open -> drain
debug2: channel 0:
2003 Sep 17
3
[Bug 651] SCO 3.2v4.2 and OpenSSH 3.7.1p1 --> connection hangs and does not close (ssh2 only)
http://bugzilla.mindrot.org/show_bug.cgi?id=651
Summary: SCO 3.2v4.2 and OpenSSH 3.7.1p1 --> connection hangs and
does not close (ssh2 only)
Product: Portable OpenSSH
Version: 3.7p1
Platform: All
OS/Version: other
Status: NEW
Severity: major
Priority: P2
Component: sshd
2001 Nov 09
4
keystroke timing attack
I'm reading this fine article on O'Reilly:
http://linux.oreillynet.com/lpt/a//linux/2001/11/08/ssh_keystroke.html
<quote>
The paper concludes that the keystroke timing data observable from
today's SSH implementations reveals a dangerously significant amount of
information about user terminal sessions--enough to locate typed
passwords in the session data stream and reduce the
2001 Aug 20
1
Idletimeout patch, third attempt
Here is my third attempt at the idletimeout patch. I tried to address
the points which Marcus Friedl brought up.
It is actually bigger than the previous patches, but not as intrusive.
It is big because it moves some stuff from serverloop.c to packet.c.
- I moved all the logic to packet.c. This means that I also had to move
the actual select() call, which used to be in serverloop.c to packet.c.
2007 Feb 23
1
ssh-agent does not immediately clean timeouted keys from memory
during my seminar of advanced exploitation techniques (SEAT, [1]) i
developed some methods to crack into system via DMA (e.g. via firewire).
as part of this i developed a program that steals loaded ssh private
keys from ssh-agents. i was astonished to find that the keys are not
immediately removed from the agent when a timeout occurs, but only the
next time the agent is queried via its socket. i
2001 Oct 16
1
Defeating Timing Attacks Patch for OpenSSH 2.9.9p2 and 2.9p2
Hello,
In response to the timing analysis attacks presented by Dawn Song et.
al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html
we
at Silicon Defense developed a patch for openssh to avoid such
measures.
Timing Analysis Evasion changes were developed by C. Jason Coit and Roel
Jonkman of Silicon Defense.
These changes cause SSH to send packets unless request not to,
2003 Sep 15
0
SCO 3.2v4.2 and OpenSSH -current --> connection hangs and does n o t close
> -----Original Message-----
> From: Ben Lindstrom
> Sent: 15 September 2003 08:53
> To: Vikash Badal - PCS
> Cc: 'openssh-unix-dev at mindrot.org'
> Subject: Re: SCO 3.2v4.2 and OpenSSH -current --> connection hangs and
> does no t close
>
> go into bsd-misc.c and comment out the define and try it
> again. We should
> be using mysignal by default
2005 Mar 03
3
ssh hang problem under solaris 8
Hi :-)
i have try a hang on exit patch that i found in the web for an old openssh
version, but it dosent help :-(
in a german gdb howto i found a tip that the backtrace output can help to
analyse the problem....
is it a solaris problem ?
Greetings
Frank
sshd:
#0 0xff19d618 in _poll () from /usr/lib/libc.so.1
#1 0xff14d53c in select () from /usr/lib/libc.so.1
#2 0x000339a0 in
2003 Apr 04
5
Anti-idle in OpenSSH client?
Heya,
Most of the windows ssh clients (putty, securecrt) have anti-idle
features. They offer either a null packet or protocol no-op or user
defined string to be sent over every x seconds.
Is this possible or planned with the OpenSSH client? Our draconian
firewall admins have started timing out ssh sessions. Yes I'm aware I
could hack up a port forwarding dumb traffic process, but was
2001 Oct 06
1
Defeating Timing Attacks
Hello,
In response to the timing analysis attacks presented by Dawn Song et.
al. in her paper http://paris.cs.berkeley.edu/~dawnsong/ssh-timing.html
we
at Silicon Defense developed a patch for openssh to avoid such
measures.
Timing Analysis Evasion changes were developed by C. Jason Coit and Roel
Jonkman of Silicon Defense.
These changes cause SSH to send packets unless request not to,
2006 Sep 07
12
Multiple (multiplexed) simultaneous ssh connections - Cygwin bug?
Hello,
?
I need to make many (>50) ssh connections from linux to cygwin at the same time. Using Windows 2000 Server (OpenSSH_4.3p2, OpenSSL 0.9.8b and updated cygwin) and Linux RHEL4 (OpenSSH_3.9p1, OpenSSL 0.9.7a).
?
It's been difficult to optimize many simultaneous connections. Here were some issues:
1.?????? On Windows XP/Professional, Microsoft intentionally cripples the TCP/IP stack.
2001 Sep 26
1
[PATCH] random SSH_MSG_IGNORE packets
Hi!
The following patch adds ability to configure the ssh client to
send SSH[2]_MSG_IGNORE packets of random length at random times
whithin a user-specified interval. The function is configured by
setting the config-file options BogusTrafficIntervalMax and
BogusTrafficIntervalMin, which defines the interval in seconds in
which the packets are randomly sent. It is disabled by default. It
suffices
2001 Oct 25
2
SIGCHLD race *trivial* patch
Yes, this is a patch against an older version of OpenSSH with other
stuff anyways, BUT, it's so TRIVIAL(*), that you can see how it would
apply to newer versions (which I've not tried).
Here's the gist: server_loop2() has a race condition with respect to
reception of SIGCHLD and checking/setting child_terminated. This patch
does two things: wait_until_can_do_something() adds a 1
2001 Oct 31
2
suggested fix for the sigchld race
comments?
alternatives: sigsetjmp(ugly) and pselect(not portable, available)
drawback: additional filedescriptors.
Index: serverloop.c
===================================================================
RCS file: /home/markus/cvs/ssh/serverloop.c,v
retrieving revision 1.82
diff -u -r1.82 serverloop.c
--- serverloop.c 10 Oct 2001 22:18:47 -0000 1.82
+++ serverloop.c 11 Oct 2001 18:06:33 -0000
@@
2001 Oct 11
0
[patch] option to prevent connection timeout
Hi,
The firewall at work doesn't allow me to make a direct SSH connection
to the Internet, so I use the ProxyCommand to tunnel SSH through a
HTTP proxy. This works fine, except for the fact that the HTTP proxy
server closes the connection after 60 seconds of inactivity. Attached
below is a patch that implements a new configuration option called
"Idle" that lets you specify the
2002 Jan 27
0
[PATCH] Add an exit delay to Openssh-3.0.2p1 for use in tunneling
Here is a patch to implement an exit delay in OpenSSH-3.0.2p1,
proposed by John Hardin. This is his description of the feature:
New option for OpenSSH: Delay before exit.
Command line option: -S delay
Config file option: sleep {delay}
Purpose: Wait the specified number of seconds after last traffic before
dropping the connection and exiting. If ports are forwarded, this causes
the ssh client
2001 Sep 28
1
[PATCH] fix for Linux hang on exit bug in 2.9.9p2
As you are now probably aware, the portability team for openssh still
has not fixed the hang-on-exit bug in the 2.9.9p2 release.
Attached is a patch for 2.9.9p2 that fixes the hang-on-exit bug for Linux
systems. It also adds a useful exit delay feature that has also not yet been
incorporated into the main sources.
For more information, see the SNFS (secure NFS) web page:
2001 Sep 05
2
sshd hangs on logout -- is this a bug?
In the changelog, there is an entry:
20001129
- (djm) Back out all the serverloop.c hacks. sshd will now hang again
if there are background children with open fds.
Does this mean that this is regarded as expected (and correct) behavior, that
should not change in the future, or does it mean that this behavior is a
known problem that someone will eventually fix?
--Adam
--
Adam McKenna
2001 Nov 14
6
[PATCH]: Patch to fix hang on exit bug under Linux and add optional exit delay
The hang-on-exit bug still hasn't been fixed in OpenSSH-3.0p1... :-(
Here again is the patch to fix this bug under Linux, updated for OpenSSH-3.0p1.
This has been exhaustively tested for six months now. It also add an exit
delay option that can be useful.
The patch does not lead to data loss under Linux.
Please see the Secure NFS page (SNFS) for further details:
2001 Oct 10
7
OpenSSH solaris: bad return code after exec of remote command
Hi OpenSSH developers,
I am using openSSH (now 2.9.9p2, but prob occurs in 2.9p2 also) to execute
commands on a remote machine which outputs data to stdout then pipes it to
another invocation of ssh which connects back to the first machine in the same
way, where it starts a program to read and store the output from the command on
the second machine. I am using the "command" option in