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Gentoo Linux Security Advisory                           GLSA 202003-04
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: Vim, gVim: Remote execution of arbitrary code
     Date: March 12, 2020
     Bugs: #687394
       ID: 202003-04

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Synopsis
========

A vulnerability has been found in Vim and gVim concerning how certain
modeline options are treated.

Background
==========

Vim is an efficient, highly configurable improved version of the
classic ‘vi’ text editor. gVim is the GUI version of Vim.

Affected packages
=================

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  app-editors/vim             < 8.1.1486               >= 8.1.1486
  2  app-editors/gvim            < 8.1.1486               >= 8.1.1486
    -------------------------------------------------------------------
     2 affected packages

Description
===========

It was found that the `:source!` command was not restricted by the
sandbox mode. If modeline was explicitly enabled, opening a specially
crafted text file in vim could result in arbitrary command execution.

Impact
======

A remote attacker could entice a user to open a specially crafted file
using Vim or gVim, possibly resulting in execution of arbitrary code
with the privileges of the process or a Denial of Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Vim users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-editors/vim-8.1.1486"

All gVim users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=app-editors/gvim-8.1.1486"

References
==========

[ 1 ] CVE-2019-12735
      https://nvd.nist.gov/vuln/detail/CVE-2019-12735

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

 https://security.gentoo.org/glsa/202003-04

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5