Bug 7376

Summary:	session die after read backspace key
Product:	Busybox	Reporter:	Pawel Szmuc <pawel>
Component:	Other	Assignee:	unassigned
Status:	NEW ---
Severity:	major	CC:	busybox-cvs
Priority:	P5
Version:	1.20.x
Target Milestone:	---
Hardware:	PC
OS:	Linux
Host:		Target:
Build:
Attachments:	LOG

Description Pawel Szmuc 2014-09-09 06:57:35 UTC

Hi

This issue was found on ESXi 5.* with BusyBox v1.20.2 multi-call binary.

We wrote a script, to relogin users.

On /etc/passwd users got:
TEST:x:1000:1000:Linux User,,,:/:/tmp/relogin.sh

############ relogin.sh ###########
#!/bin/sh
/bin/login
exit $?
###################################

If user login, "/bin/login" ask for a user name to relogin. If we press "backupspace" key, session died.

This could be reproduce by "read" at login script.

Comment 1 Denys Vlasenko 2014-09-25 11:36:32 UTC

(In reply to comment #0)
> Hi
> 
> This issue was found on ESXi 5.* with BusyBox v1.20.2 multi-call binary.
> 
> We wrote a script, to relogin users.
> 
> On /etc/passwd users got:
> TEST:x:1000:1000:Linux User,,,:/:/tmp/relogin.sh
> 
> ############ relogin.sh ###########
> #!/bin/sh
> /bin/login
> exit $?
> ###################################
> 
> If user login, "/bin/login" ask for a user name to relogin. If we press
> "backupspace" key, session died.

Tried, but failed to reproduce. In my testing, /bin/login does execute, and won't exit or crash if backspace is pressed.

Can you modify the script to run

strace -o/tmp/LOG -tt -s99 /bin/login

and post the LOG file?

Comment 2 Denys Vlasenko 2014-09-25 11:37:13 UTC

*** Bug 7382 has been marked as a duplicate of this bug. ***

Comment 3 Pawel Szmuc 2014-10-01 08:40:22 UTC

Created attachment 5702 [details]
LOG

Comment 4 Pawel Szmuc 2014-10-01 08:45:13 UTC

Hi

Thank you for your reply. LOG was attached.

On our ESXi using SSH the connections looks like
--------------------------------------------------------------
Using username "TEST".
                          - NOTICE -

Using keyboard-interactive authentication.
Password:
User TEST authenticated, now you can relogin to any user
[ Process PID=914197 runs in 32 bit mode. ]
HOST_NAME login: {FIST_KEY_IS_BACKSPACE}
--------------------------------------------------------------
Connection drop.

If this script is running from shell, this issue cannot be reproduced (only using SSH and new connection).

Comment 5 Pawel Szmuc 2014-10-13 09:12:03 UTC

Hi

Any sugestions ?

Comment 6 Pawel Szmuc 2014-12-08 12:11:01 UTC

Hi

Can someone help?