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From marty@caltrans.ca.gov  Wed Mar  4 15:59:36 1998
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Date: Wed, 4 Mar 1998 12:59:15 -0800
From: marty@caltrans.ca.gov
Reply-To: marty@caltrans.ca.gov
To: krb5-bugs@MIT.EDU
Cc: marty@db1.caltrans.ca.gov
Subject: telnetd segv's if /etc/krb5.conf doesn't exist
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>Number:         555
>Category:       krb5-appl
>Synopsis:       telnetd segv's if /etc/krb5.conf doesn't exist
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    tlyu
>State:          feedback
>Class:          sw-bug
>Submitter-Id:   unknown
>Arrival-Date:   Wed Mar 04 16:00:00 EST 1998
>Last-Modified:  Sun Apr 05 19:58:01 EDT 1998
>Originator:     Marty Lucich
>Organization:
Caltrans
	
>Release:        krb5-1.0.5
>Environment:
	
System: SunOS db1 5.5.1 Generic sun4u sparc SUNW,Ultra-Enterprise
Architecture: sun4

>Description:
	
If /etc/inetd.conf is modified to launch /usr/local/sbin/telnetd
for incoming telnet connections and /etc/krb5.conf does not exist,
it is not possible to telnet to the host.

>How-To-Repeat:
# mv /etc/krb5.conf /etc/krb5.conf~
# /usr/local/sbin/telnetd -debug 3121      [now telnet to port 3121]
Segmentation Fault - core dumped

	
>Fix:
	
>Audit-Trail:

Responsible-Changed-From-To: krb5-unassigned->tlyu
Responsible-Changed-By: tlyu
Responsible-Changed-When: Sun Apr  5 19:54:19 1998
Responsible-Changed-Why:

Mine now.

State-Changed-From-To: open-feedback
State-Changed-By: tlyu
State-Changed-When: Sun Apr  5 19:54:31 1998
State-Changed-Why:

Should be fixed now.
src/lib/krb4/g_cnffile.c 1.5


From: Tom Yu <tlyu@MIT.EDU>
To: marty@caltrans.ca.gov
Cc: krb5-bugs@MIT.EDU, marty@db1.caltrans.ca.gov
Subject: Re: krb5-appl/555: telnetd segv's if /etc/krb5.conf doesn't exist
Date: Sun, 5 Apr 1998 19:56:28 -0400 (EDT)

 Thanks for the bug report.  Please let me know if the following patch
 fixes the problem.
 
 ---Tom
 
 Index: ChangeLog
 ===================================================================
 RCS file: /cvs/krbdev/krb5/src/lib/krb4/ChangeLog,v
 retrieving revision 1.62
 diff -u -r1.62 ChangeLog
 --- ChangeLog   1998/02/18 23:17:05     1.62
 +++ ChangeLog   1998/04/05 23:55:21
 @@ -1,3 +1,8 @@
 +Sun Apr  5 19:51:21 1998  Tom Yu  <tlyu@mit.edu>
 +
 +       * g_cnffile.c (krb__get_srvtabname): Fix up to not free context
 +       unless it is valid.
 +
  Wed Feb 18 16:17:49 1998  Tom Yu  <tlyu@mit.edu>
  
         * Makefile.in: Remove trailing slash from thisconfigdir.  Fix up
 Index: g_cnffile.c
 ===================================================================
 RCS file: /cvs/krbdev/krb5/src/lib/krb4/g_cnffile.c,v
 retrieving revision 1.4
 diff -u -r1.4 g_cnffile.c
 --- g_cnffile.c 1997/08/07 20:32:14     1.4
 +++ g_cnffile.c 1998/04/05 23:55:21
 @@ -70,7 +70,8 @@
         }else {
             retname = strdup(default_srvtabname);
         }
 -       krb5_free_context(context);
 +       if (context != NULL)
 +               krb5_free_context(context);
         return retname;
  }
  
>Unformatted: