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UNIX for Advanced & Expert Users
Solaris 10 auth issue
Post 302088033 by itsupplies on Friday 8th of September 2006 05:48:13 AM
09-08-2006
Solaris 10 auth issue
Very strange one, we've got a recently build server (Sol10 via JET flash).
Bascially you can ssh to it fine, but telnet will allow entry of username, but will then feed in a carriage return on the passwd field, this also happens on any auth type command, ie passwd on a user account will also feed in CR's!! I've seen this ages ago but cannot remember what caused it, any info appreciated
A snippet of truss on passwd command:
sigaction(SIGINT, 0xFFBFB7B8, 0xFFBFB858) = 0
ioctl(3, TCGETA, 0xFFBFB8FC) Err#6 ENXIO
ioctl(3, TCSETAF, 0xFFBFB8FC) Err#6 ENXIO
New Password: write(2, " N e w P a s s w o r d".., 14) = 14
read(3, 0xFF1EC27C, 1) = 0
ioctl(3, TCSETAW, 0xFFBFB8FC) Err#6 ENXIO
write(2, "\n", 1) = 1
sigaction(SIGINT, 0xFFBFB7B8, 0xFFBFB858) = 0
close(3) = 0
getuid() = 0 [0]
open("/dev/tty", O_RDONLY) = 3
fstat64(3, 0xFFBFB740) = 0
sigaction(SIGINT, 0xFFBFB7B8, 0xFFBFB858) = 0
ioctl(3, TCGETA, 0xFFBFB8FC) Err#6 ENXIO
ioctl(3, TCSETAF, 0xFFBFB8FC) Err#6 ENXIO
Re-enter new Password: write(2, " R e - e n t e r n e w".., 23) = 23
read(3, 0xFF1EC27C, 1) = 0
ioctl(3, TCSETAW, 0xFFBFB8FC) Err#6 ENXIO
write(2, "\n", 1) = 1
Notice the \n writes!! where the hell do these come from !!!.
Ta...
Bascially you can ssh to it fine, but telnet will allow entry of username, but will then feed in a carriage return on the passwd field, this also happens on any auth type command, ie passwd on a user account will also feed in CR's!! I've seen this ages ago but cannot remember what caused it, any info appreciated
A snippet of truss on passwd command:
sigaction(SIGINT, 0xFFBFB7B8, 0xFFBFB858) = 0
ioctl(3, TCGETA, 0xFFBFB8FC) Err#6 ENXIO
ioctl(3, TCSETAF, 0xFFBFB8FC) Err#6 ENXIO
New Password: write(2, " N e w P a s s w o r d".., 14) = 14
read(3, 0xFF1EC27C, 1) = 0
ioctl(3, TCSETAW, 0xFFBFB8FC) Err#6 ENXIO
write(2, "\n", 1) = 1
sigaction(SIGINT, 0xFFBFB7B8, 0xFFBFB858) = 0
close(3) = 0
getuid() = 0 [0]
open("/dev/tty", O_RDONLY) = 3
fstat64(3, 0xFFBFB740) = 0
sigaction(SIGINT, 0xFFBFB7B8, 0xFFBFB858) = 0
ioctl(3, TCGETA, 0xFFBFB8FC) Err#6 ENXIO
ioctl(3, TCSETAF, 0xFFBFB8FC) Err#6 ENXIO
Re-enter new Password: write(2, " R e - e n t e r n e w".., 23) = 23
read(3, 0xFF1EC27C, 1) = 0
ioctl(3, TCSETAW, 0xFFBFB8FC) Err#6 ENXIO
write(2, "\n", 1) = 1
Notice the \n writes!! where the hell do these come from !!!.
Ta...
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LEARN ABOUT SUSE
pam_issue
PAM_ISSUE(8) Linux-PAM Manual PAM_ISSUE(8) NAME
pam_issue - PAM module to add issue file to user prompt SYNOPSIS
pam_issue.so [noesc] [issue=issue-file-name] DESCRIPTION
pam_issue is a PAM module to prepend an issue file to the username prompt. It also by default parses escape codes in the issue file similar to some common getty's (using x format). Recognized escapes: d current day l name of this tty m machine architecture (uname -m) machine's network node hostname (uname -n) o domain name of this system release number of operating system (uname -r) current time s operating system name (uname -s) u number of users currently logged in U same as u except it is suffixed with "user" or "users" (eg. "1 user" or "10 users") v operating system version and build date (uname -v) OPTIONS
noesc Turns off escape code parsing. issue=issue-file-name The file to output if not using the default. MODULE TYPES PROVIDED
Only the auth module type is provided. RETURN VALUES
PAM_BUF_ERR Memory buffer error. PAM_IGNORE The prompt was already changed. PAM_SERVICE_ERR A service module error occurred. PAM_SUCCESS The new prompt was set successfully. EXAMPLES
Add the following line to /etc/pam.d/login to set the user specific issue at login: auth optional pam_issue.so issue=/etc/issue SEE ALSO
pam.conf(5), pam.d(5), pam(8) AUTHOR
pam_issue was written by Ben Collins <bcollins@debian.org>. Linux-PAM Manual 04/01/2010 PAM_ISSUE(8)