view src/testdir/test_searchpos.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 searchpos()

func Test_searchpos()
  new one
  0put ='1a3'
  1put ='123xyz'
  call cursor(1, 1)
  call assert_equal([1, 1, 2], searchpos('\%(\([a-z]\)\|\_.\)\{-}xyz', 'pcW'))
  call cursor(1, 2)
  call assert_equal([2, 1, 1], '\%(\([a-z]\)\|\_.\)\{-}xyz'->searchpos('pcW'))
  set cpo-=c
  call cursor(1, 2)
  call assert_equal([1, 2, 2], searchpos('\%(\([a-z]\)\|\_.\)\{-}xyz', 'pcW'))
  call cursor(1, 3)
  call assert_equal([1, 3, 1], searchpos('\%(\([a-z]\)\|\_.\)\{-}xyz', 'pcW'))

  " Now with \zs, first match is in column 0, "a" is matched.
  call cursor(1, 3)
  call assert_equal([2, 4, 2], searchpos('\%(\([a-z]\)\|\_.\)\{-}\zsxyz', 'pcW'))
  " With z flag start at cursor column, don't see the "a".
  call cursor(1, 3)
  call assert_equal([2, 4, 1], searchpos('\%(\([a-z]\)\|\_.\)\{-}\zsxyz', 'pcWz'))

  set cpo+=c
  " close the window
  q!

endfunc

" vim: shiftwidth=2 sts=2 expandtab