Mercurial > vim
view pixmaps/tb_load_session.xpm @ 33422:25d250a74bb6 v9.0.1969
patch 9.0.1969: [security] buffer-overflow in trunc_string()
Commit: https://github.com/vim/vim/commit/3bd7fa12e146c6051490d048a4acbfba974eeb04
Author: Christian Brabandt <cb@256bit.org>
Date: Mon Oct 2 20:59:08 2023 +0200
patch 9.0.1969: [security] buffer-overflow in trunc_string()
Problem: buffer-overflow in trunc_string()
Solution: Add NULL at end of buffer
Currently trunc_string() assumes that when the string is too long,
buf[e-1] will always be writeable. But that assumption may not always be
true. The condition currently looks like this
else if (e + 3 < buflen)
[...]
else
{
// can't fit in the "...", just truncate it
buf[e - 1] = NUL;
}
but this means, we may run into the last else clause with e still being
larger than buflen. So a buffer overflow occurs.
So instead of using `buf[e - 1]`, let's just always
truncate at `buf[buflen - 1]` which should always be writable.
Signed-off-by: Christian Brabandt <cb@256bit.org>
author | Christian Brabandt <cb@256bit.org> |
---|---|
date | Mon, 02 Oct 2023 21:30:04 +0200 |
parents | 3fc0f57ecb91 |
children |
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/* XPM */ static char * tb_load_session_xpm[] = { /* width height ncolors cpp [x_hot y_hot] */ "18 18 9 1 0 0", /* colors */ " s none m none c none", ". m black c #880000", "X s iconColor3 m black c #FF0000", "o s iconColor1 m black c #000000", "O s iconColor2 m none c #FFFFFF", "+ s iconGray2 m none c #bdbdbd", "@ s iconGray5 m black c #737373", "# s iconGray4 m none c #949494", "$ s bottomShadowColor m black c #5D6069", /* pixels */ " .. ", " .XX. ", " .XXXX. ", " ...XX... ", " .XX. ", " .XX. ", " .XX. ", " .... ", " ooooooooooooo ", " oOOOOOOOOOO++@o ", " oOOOOOOOOOOOO#@o ", " oO+++++++++XX#@o ", " oO+++++++++++#@o ", " oOoooooooooo+#@o$", " oOOOOOOOOOOO+#@o$", " o+###########@o$ ", " ooooooooooooo$ ", " $$$$$$$$$$$ "};