Mercurial > vim
view runtime/ftplugin/sh.vim @ 33776:9503dc55b5ed v9.0.2108
patch 9.0.2108: [security]: overflow with count for :s command
Commit: https://github.com/vim/vim/commit/ac63787734fda2e294e477af52b3bd601517fa78
Author: Christian Brabandt <cb@256bit.org>
Date: Tue Nov 14 20:45:48 2023 +0100
patch 9.0.2108: [security]: overflow with count for :s command
Problem: [security]: overflow with count for :s command
Solution: Abort the :s command if the count is too large
If the count after the :s command is larger than what fits into a
(signed) long variable, abort with e_value_too_large.
Adds a test with INT_MAX as count and verify it correctly fails.
It seems the return value on Windows using mingw compiler wraps around,
so the initial test using :s/./b/9999999999999999999999999990 doesn't
fail there, since the count is wrapping around several times and finally
is no longer larger than 2147483647. So let's just use 2147483647 in the
test, which hopefully will always cause a failure
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Thu, 16 Nov 2023 22:15:10 +0100 |
parents | 665078e8fea1 |
children | 8ae680be2a51 |
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" Vim filetype plugin file " Language: sh " Maintainer: Doug Kearns <dougkearns@gmail.com> " Previous Maintainer: Dan Sharp " Contributor: Enno Nagel <ennonagel+vim@gmail.com> " Eisuke Kawashima " Last Change: 2023 Sep 28 if exists("b:did_ftplugin") finish endif let b:did_ftplugin = 1 let s:save_cpo = &cpo set cpo-=C setlocal comments=:# setlocal commentstring=#\ %s setlocal formatoptions-=t formatoptions+=croql let b:undo_ftplugin = "setl com< cms< fo<" " Shell: thanks to Johannes Zellner if exists("loaded_matchit") && !exists("b:match_words") let b:match_ignorecase = 0 let s:sol = '\%(;\s*\|^\s*\)\@<=' " start of line let b:match_words = \ s:sol .. 'if\>:' .. s:sol.'elif\>:' .. s:sol.'else\>:' .. s:sol .. 'fi\>,' .. \ s:sol .. '\%(for\|while\)\>:' .. s:sol .. 'done\>,' .. \ s:sol .. 'case\>:' .. s:sol .. 'esac\>' unlet s:sol let b:undo_ftplugin ..= " | unlet! b:match_ignorecase b:match_words" endif if (has("gui_win32") || has("gui_gtk")) && !exists("b:browsefilter") let b:browsefilter = "Bourne Shell Scripts (*.sh)\t*.sh\n" .. \ "Korn Shell Scripts (*.ksh)\t*.ksh\n" .. \ "Bash Shell Scripts (*.bash)\t*.bash\n" .. \ "All Files (*.*)\t*.*\n" let b:undo_ftplugin ..= " | unlet! b:browsefilter" endif if get(b:, "is_bash", 0) if !has("gui_running") && executable("less") command! -buffer -nargs=1 ShKeywordPrg silent exe '!bash -c "{ help "<args>" 2>/dev/null || man "<args>"; } | LESS= less"' | redraw! elseif has("terminal") command! -buffer -nargs=1 ShKeywordPrg silent exe ':term bash -c "help "<args>" 2>/dev/null || man "<args>""' else command! -buffer -nargs=1 ShKeywordPrg echo system('bash -c "help <args>" 2>/dev/null || man "<args>"') endif setlocal keywordprg=:ShKeywordPrg let b:undo_ftplugin ..= " | setl kp< | sil! delc -buffer ShKeywordPrg" endif let &cpo = s:save_cpo unlet s:save_cpo " vim: nowrap sw=2 sts=2 ts=8 noet: