svn commit: r504132 - head/security/vuxml

[Alexey Dokuchaev]

On Thu, Jun 13, 2019 at 06:41:56PM +0000, Adam Weinberger wrote:
> New Revision: 504132
> URL: https://svnweb.freebsd.org/changeset/ports/504132
> 
> Log:
>   Add entry for Vim/NeoVim arbitrary code execution
> 
> Modified:
>   head/security/vuxml/vuln.xml

Do we package Vim/NeoVim with modelines enabled by default?

I've seen people say that in some distributions, default packages were not
affected because their maintainers deliberately disable modelines, e.g. in
Debian from 2007:

  * debian/runtime/debian.vim.in
    - set 'nomodeline' by default since modelines have historically been a
      source of security/resource vulnerabilities.  Users should have to
      explicitly enable the option to assume the associated risks.

Also, from Gentoo's /etc/vim/vimrc:

    We don't allow modelines by default. See bug #14088 and bug #73715.
    basis by adding "set modeline" to your ~/.vimrc file.

This sounds like a good idea.  Actually, any similar feature that allows to
execute something based on user input should be disabled by default, because
these things are very hard to get right (unless you're Daniel Bernstein).

./danfe