Mercurial > vim
view runtime/plugin/rrhelper.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 | f177a6431514 |
children |
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" Vim plugin with helper function(s) for --remote-wait " Maintainer: Flemming Madsen <fma@cci.dk> " Last Change: 2008 May 29 " Has this already been loaded? if exists("loaded_rrhelper") || !has("clientserver") finish endif let loaded_rrhelper = 1 " Setup answers for a --remote-wait client who will assume " a SetupRemoteReplies() function in the command server function SetupRemoteReplies() let cnt = 0 let max = argc() let id = expand("<client>") if id == 0 return endif while cnt < max " Handle same file from more clients and file being more than once " on the command line by encoding this stuff in the group name let uniqueGroup = "RemoteReply_".id."_".cnt " Path separators are always forward slashes for the autocommand pattern. " Escape special characters with a backslash. let f = substitute(argv(cnt), '\\', '/', "g") if exists('*fnameescape') let f = fnameescape(f) else let f = escape(f, " \t\n*?[{`$\\%#'\"|!<") endif execute "augroup ".uniqueGroup execute "autocmd ".uniqueGroup." BufUnload ". f ." call DoRemoteReply('".id."', '".cnt."', '".uniqueGroup."', '". f ."')" let cnt = cnt + 1 endwhile augroup END endfunc function DoRemoteReply(id, cnt, group, file) call server2client(a:id, a:cnt) execute 'autocmd! '.a:group.' BufUnload '.a:file execute 'augroup! '.a:group endfunc " vim: set sw=2 sts=2 :