##############################################################################
#
#  MPlayer 'stream_read' Function Remote Heap Based BOF Vulnerability
#
#  Copyright: SecPod
#
#  Date Written: 2008/10/01
#
#  Revision: 1.1
#
#  Log : ssharath
#  Issue #0297
#  ------------------------------------------------------------------------
#  This program was written by SecPod and is licensed under the GNU GPL 
#  license. Please refer to the below link for details,
#  http://www.gnu.org/licenses/gpl.html
#  This header contains information regarding licensing terms under the GPL, 
#  and information regarding obtaining source code from the Author. 
#  Consequently, pursuant to section 3(c) of the GPL, you must accompany the 
#  information found in this header with any distribution you make of this 
#  Program.
#  ------------------------------------------------------------------------
##############################################################################

if(description)
{
  script_id(900146);
  script_bugtraq_id(31473);
  script_cve_id("CVE-2008-3827");
  script_copyright(english:"Copyright (C) 2008 SecPod");
  script_version("Revision: 1.1 ");
  script_category(ACT_GATHER_INFO);
  script_family(english:"Denial of Service");
  script_name(english:"MPlayer 'stream_read' Function Remote Heap Based BOF Vulnerability");
  script_summary(english:"Check for vulnerable version of MPlayer");
  desc["english"] = "
  Overview : This host is installed with MPlayer, which is prone to remote heap
  Based BOF Vulnerability

  Vulnerability Insight:
  The flaw is exist due to error in function 'demux_real_fill_buffer()' in
  libmpdemux/demux_real.c which can be exploited to cause heap based buffer
  overflow through a specially crafted real media file.
	
  Impact:
  Execution of arbitrary code in the context of the application, and denial of 
  service.

  Impact Level: Application

  Affected Software/OS :
  MPlayer versions 1.0rc2 and prior on all running platform.

  Fix : Patch is available in SVN repository,
  http://svn.mplayerhq.hu/mplayer/trunk/libmpdemux/demux_real.c?r1=27314&r2=27675

  *****
  NOTE : Ignore this warning, if above mentioned patch is already applied.
  *****

  References :
  http://secunia.com/advisories/32045/
  http://www.securityfocus.com/archive/1/496806
  http://www.frsirt.com/english/advisories/2008/2703
  http://www.ocert.org/advisories/ocert-2008-013.html

  CVSS Score :
    CVSS Base Score     : 6.8 (AV:N/AC:M/Au:NR/C:P/I:P/A:P)
    CVSS Temporal Score : 5.3
  Risk factor : High";

  script_description(english:desc["english"]);
  script_dependencies("gather-package-list.nasl");
  script_require_keys("ssh/login/uname");
  exit(0);
}

include("ssh_func.inc");

if("Linux" >!< get_kb_item("ssh/login/uname")){
  exit(0);
}

sock = ssh_login_or_reuse_connection();
if(!sock){
  exit(0);
}

mplayerVer = ssh_cmd(socket:sock, cmd:"mplayer", timeout:timeout);
ssh_close_connection();
if(!mplayerVer){
  exit(0);
}

# grep for file version 1.0rc2 and prior
if(egrep(pattern:"^MPlayer (0\..*|1\.(0(.*)))", string:mplayerVer)){
  security_hole(0);
}