[ GLSA 202005-11 ] VLC: Buffer overflow

Thomas Deutschmann <[email protected]> Fri, 15 May 2020 00:25:14 +0200
Newsgroups	gmane.linux.gentoo.announce
Organization	Gentoo Foundation, Inc
Message-ID	<[email protected]>
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Gentoo Linux Security Advisory                           GLSA 202005-11
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: VLC: Buffer overflow
     Date: May 14, 2020
     Bugs: #721940
       ID: 202005-11

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Synopsis
========

A buffer overflow in VLC might allow local or remote attacker(s) to
execute arbitrary code.

Background
==========

VLC is a cross-platform media player and streaming server.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  media-video/vlc              < 3.0.10                  >= 3.0.10

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

A buffer overflow in DecodeBlock in sdl_image.c was discovered.

Impact
======

A remote user could craft a specifically crafted image file that could
execute arbitrary code or cause denial of service.

Workaround
==========

The user should refrain from opening files from untrusted third parties
or accessing untrusted remote sites (or disable the VLC browser
plugins), until they upgrade.

Resolution
==========

All VLC users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=media-video/vlc-3.0.10"

References
==========

[ 1 ] CVE-2019-19721
      https://nvd.nist.gov/vuln/detail/CVE-2019-19721
[ 2 ] Upstream patch

https://git.videolan.org/?p=vlc/vlc-3.0.git;a=commit;h=72afe7ebd8305bf4f5360293b8621cde52ec506b
[ 3 ] VideoLAN-SB-VLC-309
      https://www.videolan.org/security/sb-vlc309.html

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

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

 https://security.gentoo.org/glsa/202005-11

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
[email protected] 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
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