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From donn@u.washington.edu  Tue Oct  5 17:30:30 1999
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Date: Tue, 5 Oct 1999 14:28:43 -0700 (PDT)
From: donn@u.washington.edu
Reply-To: donn@u.washington.edu
To: krb5-bugs@MIT.EDU
Subject: login.c, default credentials cache
X-Send-Pr-Version: 3.99

>Number:         762
>Category:       krb5-appl
>Synopsis:       login.c fails to set default credentials cache name.
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    krb5-unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   unknown
>Arrival-Date:   Tue Oct 05 17:31:01 EDT 1999
>Last-Modified:
>Originator:     Donn Cave
>Organization:
University of Washington
>Release:        krb5-1.1
>Environment:
System: AIX 4.2
Machine: RS/6000
>Description:
login.c sets the KRB5CCNAME environment variable (repeatedly) but fails
to call krb5_cc_set_default_name() to store that value in the context.
The value apparently is actually stored there prior to setuid(), since
it's /tmp/krb5cc_0.  User's credentials are apparently missing, but
actually stored in a different file from where KRB5CCNAME points.
>How-To-Repeat:
Log in via telnet, without telnet service ticket, so login acquires
TGT using password.
>Fix:
[Line numbers reflect a couple of other fixes.]
*** appl/bsd/login.c.dist	Thu Sep 23 15:40:09 1999
--- appl/bsd/login.c	Tue Oct  5 14:07:52 1999
***************
*** 518,523 ****
--- 518,524 ----
      if (!getenv(KRB5_ENV_CCNAME)) {
  	sprintf(ccfile, "FILE:/tmp/krb5cc_p%d", getpid());
  	setenv(KRB5_ENV_CCNAME, ccfile, 1);
+ 	krb5_cc_set_default_name(kcontext, ccfile);
  	unlink(ccfile+strlen("FILE:"));
      } else {
  	/* note it correctly */
***************
*** 1727,1732 ****
--- 1727,1733 ----
  
      if (ccname)
  	setenv("KRB5CCNAME", ccname, 1);
+     krb5_cc_set_default_name(kcontext, ccname);
  
      setenv("HOME", pwd->pw_dir, 1);
      setenv("PATH", LPATH, 1);
***************
*** 1748,1755 ****
  
  #ifdef KRB5_GET_TICKETS
      /* ccfile[0] is only set if we got tickets above */
!     if (login_krb5_get_tickets && ccfile[0])
  	(void) setenv(KRB5_ENV_CCNAME, ccfile, 1);
  #endif /* KRB5_GET_TICKETS */
  
      if (tty[sizeof("tty")-1] == 'd')
--- 1749,1758 ----
  
  #ifdef KRB5_GET_TICKETS
      /* ccfile[0] is only set if we got tickets above */
!     if (login_krb5_get_tickets && ccfile[0]) {
  	(void) setenv(KRB5_ENV_CCNAME, ccfile, 1);
+ 	krb5_cc_set_default_name(kcontext, ccfile);
+     }
  #endif /* KRB5_GET_TICKETS */
  
      if (tty[sizeof("tty")-1] == 'd')
>Audit-Trail:
>Unformatted: