* Re: 1.3.12-2: weird problem with /etc/passwd and sshd
@ 2002-07-26 13:04 Len Giambrone
0 siblings, 0 replies; 4+ messages in thread
From: Len Giambrone @ 2002-07-26 13:04 UTC (permalink / raw)
To: cygwin; +Cc: frodo
Corinna Vinschen <corinna-cygwin@cygwin.com> writes:
> On Thu, Jul 25, 2002 at 08:00:46PM -0400, Len Giambrone wrote:
> >
> > More info:
> >
> > The problem doesn't exist in 1.3.10-1
> > The problem does exist in 1.3.11-3
> > The problem does exist in cygwin1-20020725
>
> It would be interesting to learn what your actual problem is...
>
> Corinna
Corinna, this was in regard to the mail I sent earlier describing the problem.
Any insight you might have would be greatly appreciated. Did you see the
previous mail? Here's the text of the mail repeated for convenience. I also
submitted cygcheck -r -v -s as an attachment; let me know if you need that as
well.
-Len
----Begin forward---
Win2k Server, Service Pack 2.
OpenSSH 3.4p1-4.
I setup sshd running as a service:
$ cygrunsrv -I sshd -p /usr/sbin/sshd.exe -a "-D -e"
and everything is happy.
Now, I create a user "foobar"
$ net user foobar foo /add
And add it to /etc/passwd
$ mkpasswd -l | grep foobar >> /etc/passwd
Now when I try to ssh in the client tells me :
$ ssh root@172.24.8.41 -v
...
debug1: Entering interactive session.
debug3: Trying to reverse map address 172.24.8.23.
Connection to 172.24.8.41 closed.
debug1: Transferred: stdin 0, stdout 53, stderr 35 bytes in 4.5 seconds
debug1: Bytes per second: stdin 0.0, stdout 11.7, stderr 7.7
debug1: Exit status -1
And the Server tells me:
...
debug1: Entering interactive session.
debug1: fd 3 setting O_NONBLOCK
debug1: fd 5 setting O_NONBLOCK
debug1: fd 7 setting O_NONBLOCK
debug1: fd 8 setting O_NONBLOCK
debug1: server_init_dispatch_13
debug1: server_init_dispatch_15
debug1: Received SIGCHLD.
Read error from remote host: Cannot send after transport endpoint shutdown
debug1: Calling cleanup 0x415dc8(0x449ab4)
debug1: session_pty_cleanup: session 0 release /dev/tty2
debug1: Calling cleanup 0x41c9c4(0x0)
I've run sshd through gdb and found the child that sshd forks to handle the
session calls this code in uidswap.c
void
permanently_set_uid(struct passwd *pw)
{
if (temporarily_use_uid_effective)
fatal("permanently_set_uid: temporarily_use_uid effective");
if (setgid(pw->pw_gid) < 0)
fatal("setgid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));
if (setuid(pw->pw_uid) < 0)
fatal("setuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));
}
For some strange reason, The setuid call is failing.
If I now remove "foobar" from /etc/passwd, everything works again.
I have not been able to reproduce this by running the server from the command
line, only when it's running as a service.
Anyone have a clue as to what might be going on here?
-Len
----End forward---
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 1.3.12-2: weird problem with /etc/passwd and sshd
2002-07-26 1:22 Len Giambrone
@ 2002-07-26 6:00 ` Corinna Vinschen
0 siblings, 0 replies; 4+ messages in thread
From: Corinna Vinschen @ 2002-07-26 6:00 UTC (permalink / raw)
To: cygwin
On Thu, Jul 25, 2002 at 08:00:46PM -0400, Len Giambrone wrote:
>
> More info:
>
> The problem doesn't exist in 1.3.10-1
> The problem does exist in 1.3.11-3
> The problem does exist in cygwin1-20020725
It would be interesting to learn what your actual problem is...
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Developer mailto:cygwin@cygwin.com
Red Hat, Inc.
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: 1.3.12-2: weird problem with /etc/passwd and sshd
@ 2002-07-26 1:22 Len Giambrone
2002-07-26 6:00 ` Corinna Vinschen
0 siblings, 1 reply; 4+ messages in thread
From: Len Giambrone @ 2002-07-26 1:22 UTC (permalink / raw)
To: cygwin
More info:
The problem doesn't exist in 1.3.10-1
The problem does exist in 1.3.11-3
The problem does exist in cygwin1-20020725
-Len
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^ permalink raw reply [flat|nested] 4+ messages in thread
* 1.3.12-2: weird problem with /etc/passwd and sshd
@ 2002-07-25 20:42 Len Giambrone
0 siblings, 0 replies; 4+ messages in thread
From: Len Giambrone @ 2002-07-25 20:42 UTC (permalink / raw)
To: cygwin; +Cc: frodo
[-- Attachment #1: Type: text/plain, Size: 2018 bytes --]
Win2k Server, Service Pack 2.
OpenSSH 3.4p1-4.
I setup sshd running as a service:
$ cygrunsrv -I sshd -p /usr/sbin/sshd.exe -a "-D -e"
and everything is happy.
Now, I create a user "foobar"
$ net user foobar foo /add
And add it to /etc/passwd
$ mkpasswd -l | grep foobar >> /etc/passwd
Now when I try to ssh in the client tells me :
$ ssh root@172.24.8.41 -v
...
debug1: Entering interactive session.
debug3: Trying to reverse map address 172.24.8.23.
Connection to 172.24.8.41 closed.
debug1: Transferred: stdin 0, stdout 53, stderr 35 bytes in 4.5 seconds
debug1: Bytes per second: stdin 0.0, stdout 11.7, stderr 7.7
debug1: Exit status -1
And the Server tells me:
...
debug1: Entering interactive session.
debug1: fd 3 setting O_NONBLOCK
debug1: fd 5 setting O_NONBLOCK
debug1: fd 7 setting O_NONBLOCK
debug1: fd 8 setting O_NONBLOCK
debug1: server_init_dispatch_13
debug1: server_init_dispatch_15
debug1: Received SIGCHLD.
Read error from remote host: Cannot send after transport endpoint shutdown
debug1: Calling cleanup 0x415dc8(0x449ab4)
debug1: session_pty_cleanup: session 0 release /dev/tty2
debug1: Calling cleanup 0x41c9c4(0x0)
I've run sshd through gdb and found the child that sshd forks to handle the
session calls this code in uidswap.c
void
permanently_set_uid(struct passwd *pw)
{
if (temporarily_use_uid_effective)
fatal("permanently_set_uid: temporarily_use_uid effective");
if (setgid(pw->pw_gid) < 0)
fatal("setgid %u: %.100s", (u_int)pw->pw_gid, strerror(errno));
if (setuid(pw->pw_uid) < 0)
fatal("setuid %u: %.100s", (u_int)pw->pw_uid, strerror(errno));
}
For some strange reason, The setuid call is failing.
If I now remove "foobar" from /etc/passwd, everything works again.
I have not been able to reproduce this by running the server from the command
line, only when it's running as a service.
Anyone have a clue as to what might be going on here?
Cygcheck is attached.
-Len
[-- Attachment #2: cygcheck --]
[-- Type: application/octet-stream, Size: 8944 bytes --]
Cygwin Win95/NT Configuration Diagnostics
Current System Time: Thu Jun 27 12:36:31 2002
Windows 2000 Server Ver 5.0 Build 2195 Service Pack 2
Path: C:\cygwin\usr\local\bin
C:\cygwin\bin
C:\cygwin\bin
c:\Perl\bin\
c:\WINNT\system32
c:\WINNT
c:\WINNT\System32\Wbem
SysDir: C:\WINNT\System32
WinDir: C:\WINNT
HOME = `C:\cygwin\home\Administrator'
MAKE_MODE = `unix'
PWD = `/home/Administrator'
USER = `Administrator'
!:: = `::\'
ALLUSERSPROFILE = `C:\Documents and Settings\All Users'
APPDATA = `C:\Documents and Settings\Administrator\Application Data'
COMMONPROGRAMFILES = `C:\Program Files\Common Files'
COMPUTERNAME = `LENTEST'
COMSPEC = `C:\WINNT\system32\cmd.exe'
HOMEDRIVE = `C:'
HOMEPATH = `\Documents and Settings\Administrator'
LOGONSERVER = `\\LENTEST'
MANPATH = `:/usr/ssl/man'
NUMBER_OF_PROCESSORS = `1'
OLDPWD = `/cygdrive/c/cygdist/ftp%3a%2f%2farchive.progeny.com%2fcygwin/release/openssh'
OS2LIBPATH = `C:\WINNT\system32\os2\dll;'
OS = `Windows_NT'
PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 7 Stepping 3, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0703'
PROGRAMFILES = `C:\Program Files'
PROMPT = `$P$G'
PS1 = `\[\033]0;\w\007
\033[32m\]\u@\h \[\033[33m\w\033[0m\]
$ '
SESSIONNAME = `Console'
SHLVL = `1'
SYSTEMDRIVE = `C:'
SYSTEMROOT = `C:\WINNT'
TEMP = `c:\DOCUME~1\ADMINI~1\LOCALS~1\Temp'
TERM = `cygwin'
TMP = `c:\DOCUME~1\ADMINI~1\LOCALS~1\Temp'
USERDOMAIN = `LENTEST'
USERNAME = `Administrator'
USERPROFILE = `C:\Documents and Settings\Administrator'
WINDIR = `C:\WINNT'
_ = `/usr/bin/cygcheck'
HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
(default) = `/cygdrive'
cygdrive flags = 0x00000022
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
(default) = `C:\cygwin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
(default) = `C:\cygwin/bin'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
(default) = `C:\cygwin/lib'
flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
a: fd N/A N/A
c: hd NTFS 2000Mb 78% CP CS UN PA FC
d: cd N/A N/A
C:\cygwin / system binmode
C:\cygwin/bin /usr/bin system binmode
C:\cygwin/lib /usr/lib system binmode
. /cygdrive user binmode,noumount
Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Not Found: cpp (good!)
Found: C:\cygwin\bin\find.exe
Not Found: gcc
Not Found: gdb
Not Found: ld
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\sh.exe
58k 2002/05/07 C:\cygwin\bin\cygbz2-1.dll - os=4.0 img=1.0 sys=4.0
"cygbz2-1.dll" v0.0 ts=2002/5/7 2:33
621k 2002/05/17 C:\cygwin\bin\cygcrypto.dll - os=4.0 img=1.0 sys=4.0
"cygcrypto.dll" v0.0 ts=2002/5/17 8:24
45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
"cygform5.dll" v0.0 ts=2001/4/25 1:28
35k 2002/01/09 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
"cygform6.dll" v0.0 ts=2002/1/9 1:03
19k 2002/02/20 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
"cyggdbm.dll" v0.0 ts=2002/2/19 22:05
17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
"cyghistory4.dll" v0.0 ts=2001/1/6 23:34
20k 2002/01/13 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
"cyghistory5.dll" v0.0 ts=2002/1/12 20:27
22k 2001/12/13 C:\cygwin\bin\cygintl-1.dll - os=4.0 img=1.0 sys=4.0
"cygintl-1.dll" v0.0 ts=2001/12/13 4:28
21k 2001/06/20 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
"cygintl.dll" v0.0 ts=2001/6/20 13:09
26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
"cygmenu5.dll" v0.0 ts=2001/4/25 1:27
20k 2002/01/09 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
"cygmenu6.dll" v0.0 ts=2002/1/9 1:03
156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++5.dll" v0.0 ts=2001/4/25 1:29
175k 2002/01/09 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses++6.dll" v0.0 ts=2002/1/9 1:03
226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
"cygncurses5.dll" v0.0 ts=2001/4/25 1:17
202k 2002/01/09 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
"cygncurses6.dll" v0.0 ts=2002/1/9 1:03
15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
"cygpanel5.dll" v0.0 ts=2001/4/25 1:27
12k 2002/01/09 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
"cygpanel6.dll" v0.0 ts=2002/1/9 1:03
40k 2001/11/21 C:\cygwin\bin\cygpcre.dll - os=4.0 img=1.0 sys=4.0
"cygpcre.dll" v0.0 ts=2001/11/21 17:15
39k 2001/11/21 C:\cygwin\bin\cygpcreposix.dll - os=4.0 img=1.0 sys=4.0
"cygpcreposix.dll" v0.0 ts=2001/11/21 17:15
108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
"cygreadline4.dll" v0.0 ts=2001/1/6 23:34
121k 2002/01/13 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
"cygreadline5.dll" v0.0 ts=2002/1/12 20:27
156k 2002/05/17 C:\cygwin\bin\cygssl.dll - os=4.0 img=1.0 sys=4.0
"cygssl.dll" v0.0 ts=2002/5/17 8:24
50k 2002/03/12 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
"cygz.dll" v0.0 ts=2002/3/11 23:38
751k 2002/02/25 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
"cygwin1.dll" v0.0 ts=2002/2/25 11:14
Cygwin DLL version info:
DLL version: 1.3.10
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 51
Shared data: 3
DLL identifier: cygwin1
Mount registry: 2
Cygnus registry name: Cygnus Solutions
Cygwin registry name: Cygwin
Program options name: Program Options
Cygwin mount registry name: mounts v2
Cygdrive flags: cygdrive flags
Cygdrive prefix: cygdrive prefix
Cygdrive default prefix:
Build date: Mon Feb 25 11:14:34 EST 2002
Shared id: cygwin1S3
Cygwin Package Information
Last downloaded files to: C:\cygdist
Last downloaded files from: ftp://archive.progeny.com/cygwin
Package Version
_update-info-dir 00005-1
ash 20020131-1
bash 2.05a-3
bzip2 1.0.2-2
clear 1.0-1
cygrunsrv 0.95-1
cygutils 1.0.0-1
cygwin 1.3.10-1
diff 1.0-1
diffutils 2.8.1-1
file 3.37-1
fileutils 4.1-1
findutils 4.1.7-4
gawk 3.0.4-1
gdbm 1.8.0-4
grep 2.5-1
gzip 1.3.2-1
less 374-1
libbz2_1 1.0.2-2
libintl 0.10.38-3
libintl1 0.10.40-1
libncurses5 5.2-1
libncurses6 5.2-8
libreadline4 4.1-2
libreadline5 4.2a-1
links 0.96-1
login 1.4-3
lynx 2.8.4-1
make 3.79.1-7
ncurses 5.2-8
openssh 3.2.3p1-1
openssl 0.9.6d-1
pcre 3.7-1
popt 1.6.2-1
readline 4.2a-1
sed 3.02-1
sh-utils 2.0-2
tar 1.13.19-1
termcap 20020403-1
terminfo 5.2-3
texinfo 4.2-3
textutils 2.0.21-1
unzip 5.50-1
vim 6.1-2
wget 1.8.1-1
which 1.5-1
zlib 1.1.4-1
Use -h to see help about each section
[-- Attachment #3: Type: text/plain, Size: 214 bytes --]
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^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2002-07-26 15:39 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2002-07-26 13:04 1.3.12-2: weird problem with /etc/passwd and sshd Len Giambrone
-- strict thread matches above, loose matches on Subject: below --
2002-07-26 1:22 Len Giambrone
2002-07-26 6:00 ` Corinna Vinschen
2002-07-25 20:42 Len Giambrone
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