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view src/testdir/test_nested_function.vim @ 33863:3b8089d550eb v9.0.2141
patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk
Commit: https://github.com/vim/vim/commit/0fb375aae608d7306b4baf9c1f906961f32e2abf
Author: Christian Brabandt <cb@256bit.org>
Date: Wed Nov 29 10:23:39 2023 +0100
patch 9.0.2141: [security]: buffer-overflow in suggest_trie_walk
Problem: [security]: buffer-overflow in suggest_trie_walk
Solution: Check n before using it as index into byts array
Basically, n as an index into the byts array, can point to beyond the byts
array. So let's double check, that n is within the expected range after
incrementing it from sp->ts_curi and bail out if it would be invalid.
Reported by @henices, thanks!
Signed-off-by: Christian Brabandt <cb@256bit.org>
| author | Christian Brabandt <cb@256bit.org> |
|---|---|
| date | Sun, 10 Dec 2023 15:16:03 +0100 |
| parents | 08940efa6b4e |
| children |
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" Tests for nested functions source check.vim func NestedFunc() func! Func1() let g:text .= 'Func1 ' endfunc call Func1() func! s:func2() let g:text .= 's:func2 ' endfunc call s:func2() func! s:_func3() let g:text .= 's:_func3 ' endfunc call s:_func3() let fn = 'Func4' func! {fn}() let g:text .= 'Func4 ' endfunc call {fn}() let fn = 'func5' func! s:{fn}() let g:text .= 's:func5' endfunc call s:{fn}() endfunc func Test_nested_functions() let g:text = '' call NestedFunc() call assert_equal('Func1 s:func2 s:_func3 Func4 s:func5', g:text) endfunction func Test_nested_argument() func g:X() let g:Y = function('sort') endfunc let g:Y = function('sort') echo g:Y([], g:X()) delfunc g:X unlet g:Y endfunc func Recurse(count) if a:count > 0 call Recurse(a:count - 1) endif endfunc func Test_max_nesting() " TODO: why does this fail on Windows? Runs out of stack perhaps? CheckNotMSWindows let call_depth_here = 2 let ex_depth_here = 5 set mfd& call Recurse(99 - call_depth_here) call assert_fails('call Recurse(' . (100 - call_depth_here) . ')', 'E132:') set mfd=210 call Recurse(209 - ex_depth_here) call assert_fails('call Recurse(' . (210 - ex_depth_here) . ')', 'E169:') set mfd& endfunc " vim: shiftwidth=2 sts=2 expandtab