rshd dumps core whenever an rsh to the machine is attempted from
a remote user with a login name which is unknown locally. It uses
a structure poiner returned by getpwnam(), but it doesn't check if
it is 0 at one point. Fix:

*** rshd.c.org	Thu Dec 23 19:56:00 1993
--- rshd.c	Fri Feb 18 10:53:07 1994
***************
*** 459,465 ****
  				errorstr = "Permission denied.\n";
  
  			/* log the (failed) rsh request, if paranoid */
! 			if (paranoid || pwd->pw_uid == 0)
  		    		syslog(LOG_INFO|LOG_AUTH,
  				    "rsh denied to %s@%s as %s: cmd='%s'; %s",
  				    remuser, hostname, locuser, cmdbuf,
--- 459,465 ----
  				errorstr = "Permission denied.\n";
  
  			/* log the (failed) rsh request, if paranoid */
! 			if (paranoid || (pwd && pwd->pw_uid == 0))
  		    		syslog(LOG_INFO|LOG_AUTH,
  				    "rsh denied to %s@%s as %s: cmd='%s'; %s",
  				    remuser, hostname, locuser, cmdbuf,


- Frank

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