Mercurial > vim
view src/testdir/test_ex_z.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 | 0f93e9423890 |
children |
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" Test :z func Test_z() call setline(1, range(1, 100)) let a = execute('20z3') call assert_equal("\n20\n21\n22", a) call assert_equal(22, line('.')) " 'window' should be set to the {count} value. call assert_equal(3, &window) " If there is only one window, then twice the amount of 'scroll' is used. set scroll=2 let a = execute('20z') call assert_equal("\n20\n21\n22\n23", a) call assert_equal(23, line('.')) let a = execute('20z+3') " FIXME: I would expect the same result as '20z3' since 'help z' " says: Specifying no mark at all is the same as "+". " However it " gives "\n21\n22\n23" instead. Bug in Vim or in ":help :z"? "call assert_equal("\n20\n21\n22", a) "call assert_equal(22, line('.')) let a = execute('20z-3') call assert_equal("\n18\n19\n20", a) call assert_equal(20, line('.')) let a = execute('20z=3') call assert_match("^\n18\n19\n-\\+\n20\n-\\+\n21\n22$", a) call assert_equal(20, line('.')) let a = execute('20z^3') call assert_equal("\n14\n15\n16\n17", a) call assert_equal(17, line('.')) let a = execute('20z.3') call assert_equal("\n19\n20\n21", a) call assert_equal(21, line('.')) let a = execute('20z#3') call assert_equal("\n 20 20\n 21 21\n 22 22", a) call assert_equal(22, line('.')) let a = execute('20z#-3') call assert_equal("\n 18 18\n 19 19\n 20 20", a) call assert_equal(20, line('.')) let a = execute('20z#=3') call assert_match("^\n 18 18\n 19 19\n-\\+\n 20 20\n-\\+\n 21 21\n 22 22$", a) call assert_equal(20, line('.')) " Test with {count} bigger than the number of lines in buffer. let a = execute('20z1000') call assert_match("^\n20\n21\n.*\n99\n100$", a) call assert_equal(100, line('.')) let a = execute('20z-1000') call assert_equal(20, line('.')) let a = execute('20z=1000') call assert_match("^\n1\n.*\n-\\+\n20\n-\\\+\n.*\n100$", a) call assert_equal(20, line('.')) " Tests with multiple windows. 5split call setline(1, range(1, 100)) " Without a count, the number line is window height - 3. let a = execute('20z') call assert_equal("\n20\n21", a) call assert_equal(21, line('.')) " If window height - 3 is less than 1, it should be clamped to 1. resize 2 let a = execute('20z') call assert_equal("\n20", a) call assert_equal(20, line('.')) call assert_fails('20z=a', 'E144:') set window& scroll& bw! endfunc " :z! is the same as :z but count uses the Vim window height when not specified. func Test_z_bang() 4split call setline(1, range(1, 20)) let a = execute('10z!') call assert_equal("\n10\n11\n12\n13\n14\n15\n16\n17\n18\n19\n20", a) let a = execute('10z!#') call assert_equal("\n 10 10\n 11 11\n 12 12\n 13 13\n 14 14\n 15 15\n 16 16\n 17 17\n 18 18\n 19 19\n 20 20", a) let a = execute('10z!3') call assert_equal("\n10\n11\n12", a) %bwipe! endfunc func Test_z_overflow() " This used to access invalid memory as a result of an integer overflow " and freeze vim. normal ox normal Heat z777777776666666 ') endfunc func Test_z_negative_lnum() new z^ call assert_equal(1, line('.')) bwipe! endfunc " vim: shiftwidth=2 sts=2 expandtab