Bash-3.0 Official Patch 21

[Chet Ramey]

                             BASH PATCH REPORT
                             =================

Bash-Release: 3.0
Patch-ID: bash30-021

Bug-Reported-by:        Michal Zalewski <lcamtuf@coredump.cx>
Bug-Reference-ID:
Bug-Reference-URL:

Bug-Description:

When bash is parsing a function definition that contains a here-document
delimited by end-of-file (or end-of-string), it leaves the closing delimiter
uninitialized.  This can result in an invalid memory access when the parsed
function is later copied.

Patch:

*** ../bash-3.0.20/make_cmd.c   2003-12-19 15:46:56.000000000 -0500
--- make_cmd.c  2014-10-02 11:56:35.000000000 -0400
***************
*** 666,669 ****
--- 666,670 ----
    temp->redirector = source;
    temp->redirectee = dest_and_filename;
+   temp->here_doc_eof = 0;
    temp->instruction = instruction;
    temp->flags = 0;
*** ../bash-3.0.20/copy_cmd.c   2003-10-07 11:43:44.000000000 -0400
--- copy_cmd.c  2014-10-02 11:56:35.000000000 -0400
***************
*** 117,121 ****
      case r_reading_until:
      case r_deblank_reading_until:
!       new_redirect->here_doc_eof = savestring (redirect->here_doc_eof);
        /*FALLTHROUGH*/
      case r_reading_string:
--- 117,121 ----
      case r_reading_until:
      case r_deblank_reading_until:
!       new_redirect->here_doc_eof = redirect->here_doc_eof ? savestring 
(redirect->here_doc_eof) : 0;
        /*FALLTHROUGH*/
      case r_reading_string:

*** ../bash-3.0/patchlevel.h    Wed Aug 22 08:05:39 2001
--- patchlevel.h        Thu Sep  2 15:04:32 2004
***************
*** 26,30 ****
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 20
  
  #endif /* _PATCHLEVEL_H_ */
--- 26,30 ----
     looks for to find the patch level (for the sccs version string). */
  
! #define PATCHLEVEL 21
  
  #endif /* _PATCHLEVEL_H_ */

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/