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>

#
# Makefile for VIM on Win32, using MinGW cross compiler on Cygwin
#
# Also read INSTALLpc.txt!
#
# This compiles Vim as a Windows application.  If you want Vim to run as a
# Cygwin application use the Makefile (just like on Unix).
#
# The old Make_cyg.mak (maintained by Dan Sharp et al.) was merged into
# Make_cyg_ming.mak.  Note: USEDLL option was removed.
# This file contains Cygwin specific settings. Common settings are contained
# in Make_cyg_ming.mak.
#
# Last updated by Ken Takata.
# Last Change: 2014 Oct 21


# uncomment 'PERL' if you want a perl-enabled version
#PERL=/cygdrive/c/perl

# uncomment 'LUA' if you want a Lua-enabled version
#LUA=/cygdrive/c/lua

# uncomment 'MZSCHEME' if you want a MzScheme-enabled version
#MZSCHEME=/cygdrive/d/plt

# uncomment 'PYTHON' if you want a python-enabled version
#PYTHON=/cygdrive/c/python20

# uncomment 'PYTHON3' if you want a python3-enabled version
#PYTHON3=/cygdrive/c/python31

# uncomment 'TCL' if you want a Tcl-enabled version
#TCL=/cygdrive/c/tcl

# uncomment 'RUBY' if you want a Ruby-enabled version
#RUBY=/cygdribe/c/ruby


# Use MinGW-w64 cross compiler.
# There are two MinGW-w64 packages in Cygwin:
#   32-bit: mingw64-i686-gcc-g++
#   64-bit: mingw64-x86_64-gcc-g++
# You may also need to set 'ARCH' in Make_cyg_ming.mak.
CROSS_COMPILE = i686-w64-mingw32-
#CROSS_COMPILE = x86_64-w64-mingw32-


# Do not change this.
UNDER_CYGWIN = yes
include Make_cyg_ming.mak

# vim: set noet sw=8 ts=8 sts=0 wm=0 tw=0: