view src/os_dos.h @ 33664:06b59278bfcf v9.0.2070

patch 9.0.2070: [security] disallow setting env in restricted mode Commit: https://github.com/vim/vim/commit/6b89dd6a7257a1e2e9c7ea070b407bc4674a5118 Author: Christian Brabandt <cb@256bit.org> Date: Thu Oct 26 22:14:17 2023 +0200 patch 9.0.2070: [security] disallow setting env in restricted mode Problem: [security] disallow setting env in restricted mode Solution: Setting environment variables in restricted mode could potentially be used to execute shell commands. Disallow this. restricted mode: disable allow setting of environment variables Setting environment variables in restricted mode, may have some unwanted consequences. So, for example by setting $GCONV_PATH in restricted mode and then calling the iconv() function, one may be able to execute some unwanted payload, because the `iconv_open()` function internally uses the `$GCONV_PATH` variable to find its conversion data. So let's disable setting environment variables, even so this is no complete protection, since we are not clearing the existing environment. I tried a few ways but wasn't successful :( One could also argue to disable the iconv() function completely in restricted mode, but who knows what other API functions can be influenced by setting some other unrelated environment variables. So let's leave it as it is currently. closes: #13394 See: https://huntr.com/bounties/b0a2eda1-459c-4e36-98e6-0cc7d7faccfe/ Signed-off-by: Christian Brabandt <cb@256bit.org>
author Christian Brabandt <cb@256bit.org>
date Thu, 26 Oct 2023 22:30:03 +0200
parents 695b50472e85
children
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/* vi:set ts=8 sts=4 sw=4 noet:
 *
 * VIM - Vi IMproved	by Bram Moolenaar
 *
 * Do ":help uganda"  in Vim to read copying and usage conditions.
 * Do ":help credits" in Vim to see a list of people who contributed.
 */

/*
 * Common MS-DOS and Win32 (Windows NT and Windows 95) defines.
 *
 * Names for the EXRC, HELP and temporary files.
 * Some of these may have been defined in the makefile or feature.h.
 */

#ifndef SYS_VIMRC_FILE
# define SYS_VIMRC_FILE		"$VIM\\vimrc"
#endif
#ifndef USR_VIMRC_FILE
# define USR_VIMRC_FILE		"$HOME\\_vimrc"
#endif
#ifndef USR_VIMRC_FILE2
# define USR_VIMRC_FILE2	"$HOME\\vimfiles\\vimrc"
#endif
#ifndef USR_VIMRC_FILE3
# define USR_VIMRC_FILE3	"$VIM\\_vimrc"
#endif
#ifndef VIM_DEFAULTS_FILE
# define VIM_DEFAULTS_FILE	"$VIMRUNTIME\\defaults.vim"
#endif
#ifndef EVIM_FILE
# define EVIM_FILE		"$VIMRUNTIME\\evim.vim"
#endif

#ifndef USR_EXRC_FILE
# define USR_EXRC_FILE		"$HOME\\_exrc"
#endif
#ifndef USR_EXRC_FILE2
# define USR_EXRC_FILE2		"$VIM\\_exrc"
#endif

#ifdef FEAT_GUI
# ifndef SYS_GVIMRC_FILE
#  define SYS_GVIMRC_FILE	"$VIM\\gvimrc"
# endif
# ifndef USR_GVIMRC_FILE
#  define USR_GVIMRC_FILE	"$HOME\\_gvimrc"
# endif
# ifndef USR_GVIMRC_FILE2
#  define USR_GVIMRC_FILE2	"$HOME\\vimfiles\\gvimrc"
# endif
# ifndef USR_GVIMRC_FILE3
#  define USR_GVIMRC_FILE3	"$VIM\\_gvimrc"
# endif
# ifndef SYS_MENU_FILE
#  define SYS_MENU_FILE		"$VIMRUNTIME\\menu.vim"
# endif
#endif

#ifndef SYS_OPTWIN_FILE
# define SYS_OPTWIN_FILE	"$VIMRUNTIME\\optwin.vim"
#endif

#ifdef FEAT_VIMINFO
# ifndef VIMINFO_FILE
#  define VIMINFO_FILE		"$HOME\\_viminfo"
# endif
# ifndef VIMINFO_FILE2
#  define VIMINFO_FILE2		"$VIM\\_viminfo"
# endif
#endif

#ifndef VIMRC_FILE
# define VIMRC_FILE	"_vimrc"
#endif

#ifndef EXRC_FILE
# define EXRC_FILE	"_exrc"
#endif

#ifdef FEAT_GUI
# ifndef GVIMRC_FILE
#  define GVIMRC_FILE	"_gvimrc"
# endif
#endif

#ifndef DFLT_HELPFILE
# define DFLT_HELPFILE	"$VIMRUNTIME\\doc\\help.txt"
#endif

#ifndef SYNTAX_FNAME
# define SYNTAX_FNAME	"$VIMRUNTIME\\syntax\\%s.vim"
#endif

#ifndef DFLT_BDIR
# define DFLT_BDIR	".,$TEMP,c:\\tmp,c:\\temp" // default for 'backupdir'
#endif

#ifndef DFLT_VDIR
# define DFLT_VDIR	"$HOME/vimfiles/view"	// default for 'viewdir'
#endif

#ifndef DFLT_DIR
# define DFLT_DIR	".,$TEMP,c:\\tmp,c:\\temp" // default for 'directory'
#endif

#define DFLT_ERRORFILE		"errors.err"
#define DFLT_RUNTIMEPATH	"$HOME/vimfiles,$VIM/vimfiles,$VIMRUNTIME,$HOME/vimfiles/after,$VIM/vimfiles/after"
#define CLEAN_RUNTIMEPATH	"$VIM/vimfiles,$VIMRUNTIME,$VIM/vimfiles/after"

#define CASE_INSENSITIVE_FILENAME   // ignore case when comparing file names
#define SPACE_IN_FILENAME
#define BACKSLASH_IN_FILENAME
#define USE_CRNL		// lines end in CR-NL instead of NL
#define HAVE_DUP		// have dup()
#define HAVE_ST_MODE		// have stat.st_mode