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#! /bin/sh -e
if [ $# -eq 3 -a "$2" = '-d' ]; then
pdir="-d $3"
elif [ $# -ne 1 ]; then
echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
exit 1
fi
case "$1" in
-patch) patch $pdir -f --no-backup-if-mismatch -p2 < $0;;
-unpatch) patch $pdir -f --no-backup-if-mismatch -R -p2 < $0;;
*)
echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
exit 1
esac
exit 0
# DP: Fix CVE-2014-6271.
*** ../bash-4.1.11/builtins/common.h 2009-12-22 16:30:42.000000000 -0500
--- builtins/common.h 2014-09-16 19:27:38.000000000 -0400
***************
*** 36,39 ****
--- 36,41 ----
/* Flags for describe_command, shared between type.def and command.def */
+ #define SEVAL_FUNCDEF 0x080 /* only allow function definitions */
+ #define SEVAL_ONECMD 0x100 /* only allow a single command */
#define CDESC_ALL 0x001 /* type -a */
#define CDESC_SHORTDESC 0x002 /* command -V */
*** ../bash-4.1.11/builtins/evalstring.c 2009-10-17 21:18:50.000000000 -0400
--- builtins/evalstring.c 2014-09-16 19:27:38.000000000 -0400
***************
*** 262,265 ****
--- 262,273 ----
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;
+ }
+
bitmap = new_fd_bitmap (FD_BITMAP_SIZE);
begin_unwind_frame ("pe_dispose");
***************
*** 322,325 ****
--- 330,336 ----
dispose_fd_bitmap (bitmap);
discard_unwind_frame ("pe_dispose");
+
+ if (flags & SEVAL_ONECMD)
+ break;
}
}
*** ../bash-4.1.11/variables.c 2010-03-26 12:15:39.000000000 -0400
--- variables.c 2014-09-16 19:27:38.000000000 -0400
***************
*** 348,357 ****
strcpy (temp_string + char_index + 1, string);
! parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST);
!
! /* Ancient backwards compatibility. Old versions of bash exported
! functions like name()=() {...} */
! if (name[char_index - 1] == ')' && name[char_index - 2] == '(')
! name[char_index - 2] = '\0';
if (temp_var = find_function (name))
--- 348,355 ----
strcpy (temp_string + char_index + 1, string);
! /* Don't import function names that are invalid identifiers from the
! environment. */
! if (legal_identifier (name))
! parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST|SEVAL_FUNCDEF|SEVAL_ONECMD);
if (temp_var = find_function (name))
***************
*** 362,369 ****
else
report_error (_("error importing function definition for `%s'"), name);
-
- /* ( */
- if (name[char_index - 1] == ')' && name[char_index - 2] == '\0')
- name[char_index - 2] = '('; /* ) */
}
#if defined (ARRAY_VARS)
--- 360,363 ----
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