Mercurial > vim
view runtime/vimrc_example.vim @ 33865:8cdb69ea3711 v9.0.2143
patch 9.0.2143: [security]: buffer-overflow in ex_substitute
Commit: https://github.com/vim/vim/commit/abfa13ebe92d81aaf66669c428d767847b577453
Author: Christian Brabandt <cb@256bit.org>
Date: Thu Nov 30 11:32:18 2023 +0100
patch 9.0.2143: [security]: buffer-overflow in ex_substitute
Problem: [security]: buffer-overflow in ex_substitute
Solution: clear memory after allocating
When allocating the new_start pointer in ex_substitute() the memory
pointer points to some garbage that the following for loop in
ex_cmds.c:4743 confuses and causes it to accessing the new_start pointer
beyond it's size, leading to a buffer-overlow.
So fix this by using alloc_clear() instead of alloc(), which will
clear the memory by NUL and therefore cause the loop to terminate
correctly.
Reported by @henices, thanks!
closes: #13596
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Sun, 10 Dec 2023 15:16:05 +0100 |
parents | 4027cefc2aab |
children |
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" An example for a vimrc file. " " Maintainer: The Vim Project <https://github.com/vim/vim> " Last Change: 2023 Aug 10 " Former Maintainer: Bram Moolenaar <Bram@vim.org> " " To use it, copy it to " for Unix: ~/.vimrc " for Amiga: s:.vimrc " for MS-Windows: $VIM\_vimrc " for Haiku: ~/config/settings/vim/vimrc " for OpenVMS: sys$login:.vimrc " When started as "evim", evim.vim will already have done these settings, bail " out. if v:progname =~? "evim" finish endif " Get the defaults that most users want. source $VIMRUNTIME/defaults.vim if has("vms") set nobackup " do not keep a backup file, use versions instead else set backup " keep a backup file (restore to previous version) if has('persistent_undo') set undofile " keep an undo file (undo changes after closing) endif endif if &t_Co > 2 || has("gui_running") " Switch on highlighting the last used search pattern. set hlsearch endif " Put these in an autocmd group, so that we can delete them easily. augroup vimrcEx au! " For all text files set 'textwidth' to 78 characters. autocmd FileType text setlocal textwidth=78 augroup END " Add optional packages. " " The matchit plugin makes the % command work better, but it is not backwards " compatible. " The ! means the package won't be loaded right away but when plugins are " loaded during initialization. if has('syntax') && has('eval') packadd! matchit endif