Mercurial > vim
view runtime/bugreport.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 | 4027cefc2aab |
| children |
line wrap: on
line source
:" Use this script to create the file "bugreport.txt", which contains :" information about the environment of a possible bug in Vim. :" :" Maintainer: The Vim Project <https://github.com/vim/vim> :" Last change: 2023 Aug 10 :" Former Maintainer: Bram Moolenaar <Bram@vim.org> :" :" To use inside Vim: :" :so $VIMRUNTIME/bugreport.vim :" Or, from the command line: :" vim -s $VIMRUNTIME/bugreport.vim :" :" The "if 1" lines are to avoid error messages when expression evaluation is :" not compiled in. :" :if 1 : let more_save = &more :endif :set nomore :if has("unix") : !echo "uname -a" >bugreport.txt : !uname -a >>bugreport.txt :endif :redir >>bugreport.txt :version :if 1 : func <SID>CheckDir(n) : if isdirectory(a:n) : echo 'directory "' . a:n . '" exists' : else : echo 'directory "' . a:n . '" does NOT exist' : endif : endfun : func <SID>CheckFile(n) : if filereadable(a:n) : echo '"' . a:n . '" is readable' : else : echo '"' . a:n . '" is NOT readable' : endif : endfun : echo "--- Directories and Files ---" : echo '$VIM = "' . $VIM . '"' : call <SID>CheckDir($VIM) : echo '$VIMRUNTIME = "' . $VIMRUNTIME . '"' : call <SID>CheckDir($VIMRUNTIME) : call <SID>CheckFile(&helpfile) : call <SID>CheckFile(fnamemodify(&helpfile, ":h") . "/tags") : call <SID>CheckFile($VIMRUNTIME . "/menu.vim") : call <SID>CheckFile($VIMRUNTIME . "/filetype.vim") : call <SID>CheckFile($VIMRUNTIME . "/syntax/synload.vim") : delfun <SID>CheckDir : delfun <SID>CheckFile : echo "--- Scripts sourced ---" : scriptnames :endif :set all :set termcap :au :if 1 : echo "--- Normal/Visual mode mappings ---" :endif :map :if 1 : echo "--- Insert/Command-line mode mappings ---" :endif :map! :if 1 : echo "--- Abbreviations ---" :endif :ab :if 1 : echo "--- Highlighting ---" :endif :highlight :if 1 : echo "--- Variables ---" :endif :if 1 : let :endif :redir END :set more& :if 1 : let &more = more_save : unlet more_save :endif :e bugreport.txt