bash: patch for CVE-2014-6271 via Novell.

This commit is contained in:
Juan RP 2014-09-24 16:25:56 +02:00
parent 1b160958a2
commit 554baa4d3e
4 changed files with 96 additions and 2 deletions

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@ -0,0 +1,93 @@
CVE-2014-6271: remote code execution through bash
*** builtins/common.h 2013-07-08 16:54:47.000000000 -0400
--- builtins/common.h 2014-09-12 14:25:47.000000000 -0400
***************
*** 34,37 ****
--- 49,54 ----
#define SEVAL_PARSEONLY 0x020
#define SEVAL_NOLONGJMP 0x040
+ #define SEVAL_FUNCDEF 0x080 /* only allow function definitions */
+ #define SEVAL_ONECMD 0x100 /* only allow a single command */
/* Flags for describe_command, shared between type.def and command.def */
*** builtins/evalstring.c 2014-02-11 09:42:10.000000000 -0500
--- builtins/evalstring.c 2014-09-14 14:15:13.000000000 -0400
***************
*** 309,312 ****
--- 313,324 ----
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");
***************
*** 369,372 ****
--- 381,387 ----
dispose_fd_bitmap (bitmap);
discard_unwind_frame ("pe_dispose");
+
+ if (flags & SEVAL_ONECMD)
+ break;
}
}
*** variables.c 2014-05-15 08:26:50.000000000 -0400
--- variables.c 2014-09-14 14:23:35.000000000 -0400
***************
*** 359,369 ****
strcpy (temp_string + char_index + 1, string);
! if (posixly_correct == 0 || legal_identifier (name))
! 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))
--- 364,372 ----
strcpy (temp_string + char_index + 1, string);
! /* Don't import function names that are invalid identifiers from the
! environment, though we still allow them to be defined as shell
! variables. */
! if (legal_identifier (name))
! parse_and_execute (temp_string, name, SEVAL_NONINT|SEVAL_NOHIST|SEVAL_FUNCDEF|SEVAL_ONECMD);
if (temp_var = find_function (name))
***************
*** 382,389 ****
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)
--- 385,388 ----
*** subst.c 2014-08-11 11:16:35.000000000 -0400
--- subst.c 2014-09-12 15:31:04.000000000 -0400
***************
*** 8048,8052 ****
goto return0;
}
! else if (var = find_variable_last_nameref (temp1))
{
temp = nameref_cell (var);
--- 8118,8124 ----
goto return0;
}
! else if (var && (invisible_p (var) || var_isset (var) == 0))
! temp = (char *)NULL;
! else if ((var = find_variable_last_nameref (temp1)) && var_isset (var) && invisible_p (var) == 0)
{
temp = nameref_cell (var);

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@ -3,7 +3,7 @@ pkgname=bash
_bash_distver=4.3
_bash_patchlevel=024
version=${_bash_distver}.${_bash_patchlevel}
revision=1
revision=2
wrksrc=${pkgname}-${_bash_distver}
build_style=gnu-configure
configure_args="--without-bash-malloc --with-curses --with-installed-readline"

1
srcpkgs/chroot-bash/patches Symbolic link
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@ -0,0 +1 @@
../bash/patches

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@ -1,7 +1,7 @@
# Template build file for 'chroot-bash'.
pkgname=chroot-bash
version=4.3
revision=2
revision=3
wrksrc="bash-${version}"
build_style=gnu-configure
configure_args="--without-bash-malloc --without-curses --without-installed-readline --disable-nls"