From ellard@eecs.harvard.edu  Sat Feb 28 06:04:21 2004
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Date: Sat, 28 Feb 2004 09:04:20 -0500 (EST)
From: Daniel Ellard <ellard@eecs.harvard.edu>
Reply-To: Daniel Ellard <ellard@eecs.harvard.edu>
To: FreeBSD-gnats-submit@freebsd.org
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>Number:         63489
>Category:       bin
>Synopsis:       top(1) finger(1) segfault when using NIS groups to restrict logins
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Feb 28 06:10:22 PST 2004
>Closed-Date:    
>Last-Modified:  Sat May 24 19:23:06 UTC 2008
>Originator:     Daniel Ellard
>Release:        FreeBSD 4.7-RELEASE-p25 i386, FreeBSD 4.8-RELEASE-p15 i386, FreeBSD 4.9-RELEASE-p2 i386
>Organization:
>Environment:
 FreeBSD gerbil.eecs.harvard.edu 4.7-RELEASE-p25 FreeBSD 4.7-RELEASE-p25 #10: Wed Feb 11 13:36:48 EST 2004     ellard@gerbil.eecs.harvard.edu:/usr/obj/usr/freebsd_4.7/src/sys/RODENT  i386
 
 System: FreeBSD ant.eecs.harvard.edu 4.8-RELEASE-p15 FreeBSD 4.8-RELEASE-p15 #5: Fri Feb 20 10:27:42 EST 2004 ellard@ant.eecs.harvard.edu:/usr/obj/usr/freebsd_4.8/src/sys/ANT i386
 
 FreeBSD shrew.eecs.harvard.edu 4.9-RELEASE-p2 FreeBSD 4.9-RELEASE-p2 #3: Wed Feb 11 17:39:10 EST 2004     ellard@shrew.eecs.harvard.edu:/usr/obj/usr/freebsd_4.9/src/sys/SHREW  i386
 
>Description:
 
 "top" or "finger foo" segfaults on a machine with logins limited to a
 subset of NIS user groups.  (There might be other apps that die the
 same way, but these are the first two I found, and top is especially
 important to me.) This only happens when logins are restricted;
 letting in everyone (i.e.  "+:::::::::") doesn't cause the problem. 
 The programs die in getpwent.
 
 How-To-Repeat:
 
 Run "top" or "finger foo" on a machine with logins limited to a subset
 of NIS user groups.  (There might be other apps that die the same way,
 but these are the first two I found.)
 
 Specific steps:
 
 Note:  if you already have any lines of the form "+@xyz:::::::::" in
 your /etc/passwd file, then you can skip steps 1 and 2.
 
 	1.  Create an NIS group of users with a specific name (in this
 		example, I'll call it foo).
 
 	2.  Use vipw to edit /etc/passwd.  Comment out any references
 		to NIS groups (i.e.  "+:::::::::").  Add
 		"+@foo:::::::::" as the last line.
 
 	3.  Run "top" or "finger foo".  ("foo" doesn't have to be the
 		name of a real user -- it can be anything.  The point
 		is to have finger try to look up a user.)
 
 		Watch as it segfaults in getpwent.
 
 
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: gnats-admin->freebsd-bugs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Mon Mar 29 11:27:26 PST 2004 
Responsible-Changed-Why:  
I forgot to reassign it when I cleaned up the formatting.  Oops. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=63489 
State-Changed-From-To: open->closed 
State-Changed-By: maxim 
State-Changed-When: Sat Jul 17 22:27:16 GMT 2004 
State-Changed-Why:  
Duplicate of bin/45990. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=63489 
State-Changed-From-To: closed->open 
State-Changed-By: maxim 
State-Changed-When: Sat Jul 17 23:23:50 GMT 2004 
State-Changed-Why:  
It looks like a different bug in getpwent() code. 

http://www.freebsd.org/cgi/query-pr.cgi?pr=63489 
>Unformatted:
