usr/src/cmd/bash/Patches-4.0/bash40-044
branchoi_151a
changeset 254 9c2a4ac793f0
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usr/src/cmd/bash/Patches-4.0/bash40-044	Mon May 04 14:04:39 2015 +0100
@@ -0,0 +1,140 @@
+			     BASH PATCH REPORT
+			     =================
+
+Bash-Release: 4.0
+Patch-ID: bash40-044
+
+Bug-Reported-by:	Michal Zalewski <[email protected]>
+Bug-Reference-ID:
+Bug-Reference-URL:
+
+Bug-Description:
+
+A combination of nested command substitutions and function importing from
+the environment can cause bash to execute code appearing in the environment
+variable value following the function definition.
+
+Patch:
+
+*** ../bash-4.0.43/builtins/evalstring.c	2014-09-16 19:20:48.000000000 -0400
+--- builtins/evalstring.c	2014-10-04 15:33:32.000000000 -0400
+***************
+*** 44,47 ****
+--- 44,48 ----
+  #include "../redir.h"
+  #include "../trap.h"
++ #include "../bashintl.h"
+  
+  #include <y.tab.h>
+***************
+*** 259,268 ****
+  	      struct fd_bitmap *bitmap;
+  
+! 	      if ((flags & SEVAL_FUNCDEF) && command->type != cm_function_def)
+  		{
+! 		  internal_warning ("%s: ignoring function definition attempt", from_file);
+! 		  should_jump_to_top_level = 0;
+! 		  last_result = last_command_exit_value = EX_BADUSAGE;
+! 		  break;
+  		}
+  
+--- 260,282 ----
+  	      struct fd_bitmap *bitmap;
+  
+! 	      if (flags & SEVAL_FUNCDEF)
+  		{
+! 		  char *x;
+! 
+! 		  /* If the command parses to something other than a straight
+! 		     function definition, or if we have not consumed the entire
+! 		     string, or if the parser has transformed the function
+! 		     name (as parsing will if it begins or ends with shell
+! 		     whitespace, for example), reject the attempt */
+! 		  if (command->type != cm_function_def ||
+! 		      ((x = parser_remaining_input ()) && *x) ||
+! 		      (STREQ (from_file, command->value.Function_def->name->word) == 0))
+! 		    {
+! 		      internal_warning (_("%s: ignoring function definition attempt"), from_file);
+! 		      should_jump_to_top_level = 0;
+! 		      last_result = last_command_exit_value = EX_BADUSAGE;
+! 		      reset_parser ();
+! 		      break;
+! 		    }
+  		}
+  
+***************
+*** 329,333 ****
+  
+  	      if (flags & SEVAL_ONECMD)
+! 		break;
+  	    }
+  	}
+--- 343,350 ----
+  
+  	      if (flags & SEVAL_ONECMD)
+! 		{
+! 		  reset_parser ();
+! 		  break;
+! 		}
+  	    }
+  	}
+*** ../bash-4.0.43/parse.y	2014-09-30 19:41:09.000000000 -0400
+--- parse.y	2014-10-04 15:27:12.000000000 -0400
+***************
+*** 2279,2282 ****
+--- 2279,2292 ----
+  }
+  
++ char *
++ parser_remaining_input ()
++ {
++   if (shell_input_line == 0)
++     return 0;
++   if (shell_input_line_index < 0 || shell_input_line_index >= shell_input_line_len)
++     return '\0';	/* XXX */
++   return (shell_input_line + shell_input_line_index);
++ }
++ 
+  #ifdef INCLUDE_UNUSED
+  /* Back the input pointer up by one, effectively `ungetting' a character. */
+***************
+*** 3628,3633 ****
+    restore_parser_state (&ps);
+    reset_parser ();
+!   if (interactive)
+!     token_to_read = 0;
+  
+    /* Need to find how many characters parse_and_execute consumed, update
+--- 3638,3643 ----
+    restore_parser_state (&ps);
+    reset_parser ();
+! 
+!   token_to_read = 0;
+  
+    /* Need to find how many characters parse_and_execute consumed, update
+*** ../bash-4.0.43/shell.h	2009-01-04 14:32:41.000000000 -0500
+--- shell.h	2014-10-04 15:27:12.000000000 -0400
+***************
+*** 161,164 ****
+--- 161,166 ----
+  
+  /* Let's try declaring these here. */
++ extern char *parser_remaining_input __P((void));
++ 
+  extern sh_parser_state_t *save_parser_state __P((sh_parser_state_t *));
+  extern void restore_parser_state __P((sh_parser_state_t *));
+*** ../bash-4.0/patchlevel.h	2009-01-04 14:32:40.000000000 -0500
+--- patchlevel.h	2009-02-22 16:11:31.000000000 -0500
+***************
+*** 26,30 ****
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 43
+  
+  #endif /* _PATCHLEVEL_H_ */
+--- 26,30 ----
+     looks for to find the patch level (for the sccs version string). */
+  
+! #define PATCHLEVEL 44
+  
+  #endif /* _PATCHLEVEL_H_ */