This was reported on BUGTRAQ on Jul 17 1999.  Please see
quoted URL for an archived copy of the original BUGTRAQ
post.

Patch offered in the post (I haven't tested it): (a bit
broken by the web form)

--- b.c.orig    Fri Jan 20 00:38:25 1995
+++ b.c Sat Jul 17 01:54:09 1999
@@ -21,6 +21,7 @@
 #include <pwd.h>
 #endif
 #include <errno.h>
+#include <sys/types.h>

 #include "config.h"
 #include "blocks.h"
@@ -1990,6 +1991,7 @@
  {
  long tim=time(0);
  B *b;
+ mode_t mask=umask (077); /* no access to DEADJOE for
others */
  FILE *f=fopen("DEADJOE","a");
  fprintf(f,"\n*** Modified files in JOE when it aborted on
%s",ctime(&tim));
  if(sig) fprintf(f,"*** JOE was aborted by signal
%d\n",sig);