Mercurial > vim
view runtime/syntax/antlr.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 | 46763b01cd9a |
children |
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" Vim syntax file " Antlr: ANTLR, Another Tool For Language Recognition <www.antlr.org> " Maintainer: Mathieu Clabaut <mathieu.clabaut@free.fr> " LastChange: 02 May 2001 " Original: Comes from JavaCC.vim " quit when a syntax file was already loaded if exists("b:current_syntax") finish endif " This syntac file is a first attempt. It is far from perfect... " Uses java.vim, and adds a few special things for JavaCC Parser files. " Those files usually have the extension *.jj " source the java.vim file runtime! syntax/java.vim unlet b:current_syntax "remove catching errors caused by wrong parenthesis (does not work in antlr "files) (first define them in case they have not been defined in java) syn match javaParen "--" syn match javaParenError "--" syn match javaInParen "--" syn match javaError2 "--" syn clear javaParen syn clear javaParenError syn clear javaInParen syn clear javaError2 " remove function definitions (they look different) (first define in " in case it was not defined in java.vim) "syn match javaFuncDef "--" "syn clear javaFuncDef "syn match javaFuncDef "[a-zA-Z][a-zA-Z0-9_. \[\]]*([^-+*/()]*)[ \t]*:" contains=javaType " syn region javaFuncDef start=+t[a-zA-Z][a-zA-Z0-9_. \[\]]*([^-+*/()]*,[ ]*+ end=+)[ \t]*:+ syn keyword antlrPackages options language buildAST syn match antlrPackages "PARSER_END([^)]*)" syn match antlrPackages "PARSER_BEGIN([^)]*)" syn match antlrSpecToken "<EOF>" " the dot is necessary as otherwise it will be matched as a keyword. syn match antlrSpecToken ".LOOKAHEAD("ms=s+1,me=e-1 syn match antlrSep "[|:]\|\.\." syn keyword antlrActionToken TOKEN SKIP MORE SPECIAL_TOKEN syn keyword antlrError DEBUG IGNORE_IN_BNF hi def link antlrSep Statement hi def link antlrPackages Statement let b:current_syntax = "antlr" " vim: ts=8