diff options
author | Christian Brabandt <cb@256bit.org> | 2023-08-31 23:52:30 +0200 |
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committer | Christian Brabandt <cb@256bit.org> | 2023-08-31 23:52:30 +0200 |
commit | 816fbcc262687b81fc46f82f7bbeb1453addfe0c (patch) | |
tree | e48198ffea7b0b80669253fb970fdcc1d2f4c518 /runtime/ftplugin/ruby.vim | |
parent | 0ffa97e8fae5e73ff05ba24178cfc7206a3fe67e (diff) |
patch 9.0.1833: [security] runtime file fixesv9.0.1833
Problem: runtime files may execute code in current dir
Solution: only execute, if not run from current directory
The perl, zig and ruby filetype plugins and the zip and gzip autoload
plugins may try to load malicious executable files from the current
working directory. This is especially a problem on windows, where the
current directory is implicitly in your $PATH and windows may even run a
file with the extension `.bat` because of $PATHEXT.
So make sure that we are not trying to execute a file from the current
directory. If this would be the case, error out (for the zip and gzip)
plugins or silently do not run those commands (for the ftplugins).
This assumes, that only the current working directory is bad. For all
other directories, it is assumed that those directories were
intentionally set to the $PATH by the user.
Signed-off-by: Christian Brabandt <cb@256bit.org>
Diffstat (limited to 'runtime/ftplugin/ruby.vim')
-rw-r--r-- | runtime/ftplugin/ruby.vim | 68 |
1 files changed, 39 insertions, 29 deletions
diff --git a/runtime/ftplugin/ruby.vim b/runtime/ftplugin/ruby.vim index 8c1f47731c..f4e1f60438 100644 --- a/runtime/ftplugin/ruby.vim +++ b/runtime/ftplugin/ruby.vim @@ -99,41 +99,51 @@ function! s:build_path(path) abort return path endfunction -if !exists('b:ruby_version') && !exists('g:ruby_path') && isdirectory(expand('%:p:h')) - let s:version_file = findfile('.ruby-version', '.;') - if !empty(s:version_file) && filereadable(s:version_file) - let b:ruby_version = get(readfile(s:version_file, '', 1), '') - if !has_key(g:ruby_version_paths, b:ruby_version) - let g:ruby_version_paths[b:ruby_version] = s:query_path(fnamemodify(s:version_file, ':p:h')) +let s:execute_ruby = 1 +" Security Check, don't execute ruby from the current directory +if fnamemodify(exepath("ruby"), ":p:h") ==# getcwd() + let s:execute_ruby = 0 +endif + +function SetRubyPath() + if !exists('b:ruby_version') && !exists('g:ruby_path') && isdirectory(expand('%:p:h')) + let s:version_file = findfile('.ruby-version', '.;') + if !empty(s:version_file) && filereadable(s:version_file) && s:execute_ruby + let b:ruby_version = get(readfile(s:version_file, '', 1), '') + if !has_key(g:ruby_version_paths, b:ruby_version) + let g:ruby_version_paths[b:ruby_version] = s:query_path(fnamemodify(s:version_file, ':p:h')) + endif endif endif -endif -if exists("g:ruby_path") - let s:ruby_path = type(g:ruby_path) == type([]) ? join(g:ruby_path, ',') : g:ruby_path -elseif has_key(g:ruby_version_paths, get(b:, 'ruby_version', '')) - let s:ruby_paths = g:ruby_version_paths[b:ruby_version] - let s:ruby_path = s:build_path(s:ruby_paths) -else - if !exists('g:ruby_default_path') - if has("ruby") && has("win32") - ruby ::VIM::command( 'let g:ruby_default_path = split("%s",",")' % $:.join(%q{,}) ) - elseif executable('ruby') && !empty($HOME) - let g:ruby_default_path = s:query_path($HOME) - else - let g:ruby_default_path = map(split($RUBYLIB,':'), 'v:val ==# "." ? "" : v:val') + if exists("g:ruby_path") + let s:ruby_path = type(g:ruby_path) == type([]) ? join(g:ruby_path, ',') : g:ruby_path + elseif has_key(g:ruby_version_paths, get(b:, 'ruby_version', '')) && s:execute_ruby + let s:ruby_paths = g:ruby_version_paths[b:ruby_version] + let s:ruby_path = s:build_path(s:ruby_paths) + else + if !exists('g:ruby_default_path') + if has("ruby") && has("win32") + ruby ::VIM::command( 'let g:ruby_default_path = split("%s",",")' % $:.join(%q{,}) ) + elseif executable('ruby') && !empty($HOME) && s:execute_ruby + let g:ruby_default_path = s:query_path($HOME) + else + let g:ruby_default_path = map(split($RUBYLIB,':'), 'v:val ==# "." ? "" : v:val') + endif endif + let s:ruby_paths = g:ruby_default_path + let s:ruby_path = s:build_path(s:ruby_paths) endif - let s:ruby_paths = g:ruby_default_path - let s:ruby_path = s:build_path(s:ruby_paths) -endif -if stridx(&l:path, s:ruby_path) == -1 - let &l:path = s:ruby_path -endif -if exists('s:ruby_paths') && stridx(&l:tags, join(map(copy(s:ruby_paths),'v:val."/tags"'),',')) == -1 - let &l:tags = &tags . ',' . join(map(copy(s:ruby_paths),'v:val."/tags"'),',') -endif + if stridx(&l:path, s:ruby_path) == -1 + let &l:path = s:ruby_path + endif + if exists('s:ruby_paths') && stridx(&l:tags, join(map(copy(s:ruby_paths),'v:val."/tags"'),',')) == -1 + let &l:tags = &tags . ',' . join(map(copy(s:ruby_paths),'v:val."/tags"'),',') + endif +endfunction + +call SetRubyPath() if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter") let b:browsefilter = "Ruby Source Files (*.rb)\t*.rb\n" . |