[ GLSA 200403-13 ] Remote buffer overflow in MPlayer

[Kurt Lieber <klieber () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200403-13
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                                             http://security.gentoo.org
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  Severity: High
     Title: Remote buffer overflow in MPlayer
      Date: March 31, 2004
      Bugs: #46246
        ID: 200403-13

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Synopsis
========

MPlayer contains a remotely exploitable buffer overflow in the HTTP
parser that may allow attackers to run arbitrary code on a user's
computer.

Background
==========

Quote from http://mplayerhq.hu

"MPlayer is a movie player for LINUX (runs on many other Unices, and
non-x86 CPUs, see the documentation). It plays most MPEG, VOB, AVI,
OGG/OGM, VIVO, ASF/WMA/WMV, QT/MOV/MP4, FLI, RM, NuppelVideo, YUV4MPEG,
FILM, RoQ, PVA files, supported by many native, XAnim, and Win32 DLL
codecs. You can watch VideoCD, SVCD, DVD, 3ivx, DivX 3/4/5 and even WMV
movies, too."

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

    -------------------------------------------------------------------
     Package/        Vulnerable        /                  Unaffected
    -------------------------------------------------------------------
     mplayer           <= 0.92                             >= 0.92-r1
     mplayer     <= mplayer-1.0_pre2           >= mplayer-1.0_pre2-r1
     mplayer     <= mplayer-1.0_pre3           >= mplayer-1.0_pre3-r3

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

A vulnerability exists in the MPlayer HTTP parser which may allow an
attacker to craft a special HTTP header ("Location:") which will trick
MPlayer into executing arbitrary code on the user's computer.

Impact
======

An attacker without privileges may exploit this vulnerability remotely,
allowing arbitrary code to be executed in order to gain unauthorized
access.

Workaround
==========

A workaround is not currently known for this issue. All users are
advised to upgrade to the latest version of the affected package.

Resolution
==========

MPlayer may be upgraded as follows:

x86 and sparc:

    # emerge sync

    # emerge -pv ">=media-video/mplayer-0.92-r1"
    # emerge ">=media-video/mplayer-0.92-r1"

amd64:

    # emerge sync

    # emerge -pv ">=media-video/mplayer-1.0_pre2-r1"
    # emerge ">=media-video/mplayer-1.0_pre2-r1"

ppc:

    # emerge sync

    # emerge -pv ">=media-video/mplayer-1.0_pre3-r2"
    # emerge ">=media-video/mplayer-1.0_pre3-r2"

References
==========

  [ 1 ] http://www.mplayerhq.hu/homepage/design6/news.html

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
http://bugs.gentoo.org.

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