Mercurial > vim
view src/testdir/test_ga.vim @ 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 | 08940efa6b4e |
children |
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" Test ga normal command, and :ascii Ex command. func Do_ga(c) call setline(1, a:c) let l:a = execute("norm 1goga") let l:b = execute("ascii") call assert_equal(l:a, l:b) return l:a endfunc func Test_ga_command() new set display=uhex call assert_equal("\nNUL", Do_ga('')) call assert_equal("\n<<01>> 1, Hex 01, Oct 001, Digr SH", Do_ga("\x01")) call assert_equal("\n<<09>> 9, Hex 09, Oct 011, Digr HT", Do_ga("\t")) set display= call assert_equal("\nNUL", Do_ga('')) call assert_equal("\n<^A> 1, Hex 01, Oct 001, Digr SH", Do_ga("\x01")) call assert_equal("\n<^I> 9, Hex 09, Oct 011, Digr HT", Do_ga("\t")) call assert_equal("\n<^@> 0, Hex 00, Octal 000", Do_ga("\n")) call assert_equal("\n<e> 101, Hex 65, Octal 145", Do_ga('e')) " Test a few multi-bytes characters. call assert_equal("\n<é> 233, Hex 00e9, Oct 351, Digr e'", Do_ga('é')) call assert_equal("\n<ẻ> 7867, Hex 1ebb, Oct 17273, Digr e2", Do_ga('ẻ')) call assert_equal("\n<\U00012345> 74565, Hex 00012345, Octal 221505", Do_ga("\U00012345")) " Test with combining characters. call assert_equal("\n<e> 101, Hex 65, Octal 145 < ́> 769, Hex 0301, Octal 1401", Do_ga("e\u0301")) call assert_equal("\n<e> 101, Hex 65, Octal 145 < ́> 769, Hex 0301, Octal 1401 < ̱> 817, Hex 0331, Octal 1461", Do_ga("e\u0301\u0331")) call assert_equal("\n<e> 101, Hex 65, Octal 145 < ́> 769, Hex 0301, Octal 1401 < ̱> 817, Hex 0331, Octal 1461 < ̸> 824, Hex 0338, Octal 1470", Do_ga("e\u0301\u0331\u0338")) " When using Mac fileformat, CR instead of NL is used for line termination enew! set fileformat=mac call assert_equal("\n<^J> 10, Hex 0a, Oct 012, Digr NU", Do_ga("\r")) bwipe! endfunc " vim: shiftwidth=2 sts=2 expandtab